From 9c1ce66737bc85e0900b2e5014cd2773e09025c7 Mon Sep 17 00:00:00 2001
From: Qt Submodule Update Bot <qt_submodule_update_bot@qt-project.org>
Date: Fri, 23 Feb 2018 22:16:48 +0100
Subject: [PATCH 1/6] Update submodules on '5.11' in qt5

Change-Id: I2f9a24e295282514da028d8ff8d27e0de6326218
Reviewed-by: Liang Qi <liang.qi@qt.io>
---
 qt3d             | 2 +-
 qtbase           | 2 +-
 qtconnectivity   | 2 +-
 qtdeclarative    | 2 +-
 qtquickcontrols2 | 2 +-
 qttools          | 2 +-
 qtwebengine      | 2 +-
 qtwebview        | 2 +-
 8 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/qt3d b/qt3d
index 05185633..8b6bc310 160000
--- a/qt3d
+++ b/qt3d
@@ -1 +1 @@
-Subproject commit 05185633763b9916331be868f33a36018dcf2b4b
+Subproject commit 8b6bc3103fc937a6904dd6e6d135e8593619f835
diff --git a/qtbase b/qtbase
index 02eb264a..bcd5532f 160000
--- a/qtbase
+++ b/qtbase
@@ -1 +1 @@
-Subproject commit 02eb264aa2db20fac479a749c39044cc9ed304b2
+Subproject commit bcd5532fcb8442d930721f0c8048c764f4cbbf1e
diff --git a/qtconnectivity b/qtconnectivity
index 7bcc5dc2..d70fe2ac 160000
--- a/qtconnectivity
+++ b/qtconnectivity
@@ -1 +1 @@
-Subproject commit 7bcc5dc2c323b2ed120fb7bf695286f6a01c44d0
+Subproject commit d70fe2ac47dbf034991f0b2a4b0a3e1f16d171b9
diff --git a/qtdeclarative b/qtdeclarative
index c9398266..53d1e9ed 160000
--- a/qtdeclarative
+++ b/qtdeclarative
@@ -1 +1 @@
-Subproject commit c9398266d804d570f305590df9481028c9880175
+Subproject commit 53d1e9ed21d25e65a2f13606af479838f5f21fe7
diff --git a/qtquickcontrols2 b/qtquickcontrols2
index e80d273e..f1f884d3 160000
--- a/qtquickcontrols2
+++ b/qtquickcontrols2
@@ -1 +1 @@
-Subproject commit e80d273e6f19ba0a6a0f4e830724a36785ef19f6
+Subproject commit f1f884d353c5a9190e200cc04e94d4658c69a23b
diff --git a/qttools b/qttools
index c29a1b03..9dfdfdf5 160000
--- a/qttools
+++ b/qttools
@@ -1 +1 @@
-Subproject commit c29a1b03fd0fe6cc3496a6a14c56f6ef3390b713
+Subproject commit 9dfdfdf5744d3bf0ffea3c380ed37f0ab9273fe5
diff --git a/qtwebengine b/qtwebengine
index 732d0933..73e72f7b 160000
--- a/qtwebengine
+++ b/qtwebengine
@@ -1 +1 @@
-Subproject commit 732d09331c1e4efa51501aae9bcd6924eecdd5c3
+Subproject commit 73e72f7b5f3dc9b08a18a2afc286576951b424b9
diff --git a/qtwebview b/qtwebview
index cf23a402..fa66026b 160000
--- a/qtwebview
+++ b/qtwebview
@@ -1 +1 @@
-Subproject commit cf23a402b97b459309ec32fe49c82a845a3636af
+Subproject commit fa66026beafaf00aa549f71d6879320610d0e7e5

From 8c790cd2bc65625d741de8f6f1133516bafa52e5 Mon Sep 17 00:00:00 2001
From: Qt Submodule Update Bot <qt_submodule_update_bot@qt-project.org>
Date: Sat, 24 Feb 2018 23:23:08 +0100
Subject: [PATCH 2/6] Update submodules on '5.11' in qt5

Change-Id: I46be13c9983d30fb1e2461dbc795664600e0655a
Reviewed-by: Liang Qi <liang.qi@qt.io>
---
 qt3d   | 2 +-
 qtbase | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/qt3d b/qt3d
index 8b6bc310..4ce90380 160000
--- a/qt3d
+++ b/qt3d
@@ -1 +1 @@
-Subproject commit 8b6bc3103fc937a6904dd6e6d135e8593619f835
+Subproject commit 4ce90380ad5272de3bec178c480a132b5d4771ba
diff --git a/qtbase b/qtbase
index bcd5532f..9df6f336 160000
--- a/qtbase
+++ b/qtbase
@@ -1 +1 @@
-Subproject commit bcd5532fcb8442d930721f0c8048c764f4cbbf1e
+Subproject commit 9df6f3367e971d4fad63e59bb42615e2b7a580ce

From 51a87054d644ae22249fd98484b8ba0ebeeda165 Mon Sep 17 00:00:00 2001
From: Johan Klokkhammer Helsing <johan.helsing@qt.io>
Date: Tue, 13 Feb 2018 13:05:01 +0100
Subject: [PATCH 3/6] Provisioning: Install RPMs for mesa-wayland-egl on RHEL
 7.4

The standard mesa.spec file had sections for wayland-egl, which were ifdef'ed
out. The RPMs downloaded by this script have been built with these ifdef's
removed.

Task-number: QTBUG-66341
Change-Id: I43bcc67f5fd112e0837d45da7df20bcb63bfd989
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
---
 .../61-wayland-egl.sh                         | 61 +++++++++++++++++++
 1 file changed, 61 insertions(+)
 create mode 100755 coin/provisioning/qtci-linux-RHEL-7.4-x86_64/61-wayland-egl.sh

diff --git a/coin/provisioning/qtci-linux-RHEL-7.4-x86_64/61-wayland-egl.sh b/coin/provisioning/qtci-linux-RHEL-7.4-x86_64/61-wayland-egl.sh
new file mode 100755
index 00000000..7bb6d1e8
--- /dev/null
+++ b/coin/provisioning/qtci-linux-RHEL-7.4-x86_64/61-wayland-egl.sh
@@ -0,0 +1,61 @@
+#!/usr/bin/env bash
+
+#############################################################################
+##
+## Copyright (C) 2018 The Qt Company Ltd.
+## Contact: http://www.qt.io/licensing/
+##
+## This file is part of the provisioning scripts of the Qt Toolkit.
+##
+## $QT_BEGIN_LICENSE:LGPL21$
+## Commercial License Usage
+## Licensees holding valid commercial Qt licenses may use this file in
+## accordance with the commercial license agreement provided with the
+## Software or, alternatively, in accordance with the terms contained in
+## a written agreement between you and The Qt Company. For licensing terms
+## and conditions see http://www.qt.io/terms-conditions. For further
+## information use the contact form at http://www.qt.io/contact-us.
+##
+## GNU Lesser General Public License Usage
+## Alternatively, this file may be used under the terms of the GNU Lesser
+## General Public License version 2.1 or version 3 as published by the Free
+## Software Foundation and appearing in the file LICENSE.LGPLv21 and
+## LICENSE.LGPLv3 included in the packaging of this file. Please review the
+## following information to ensure the GNU Lesser General Public License
+## requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+## http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+##
+## As a special exception, The Qt Company gives you certain additional
+## rights. These rights are described in The Qt Company LGPL Exception
+## version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+##
+## $QT_END_LICENSE$
+##
+#############################################################################
+
+set -ex
+
+source "${BASH_SOURCE%/*}/../common/unix/DownloadURL.sh"
+
+version="17.0.1-6.20170307.wayland"
+wayland_egl_rpm="mesa-libwayland-egl-$version.el7.x86_64.rpm"
+wayland_egl_sha1="0a42fddd9a58c0bcd93efdaf84fd54b872f050d0"
+wayland_egl_devel_rpm="mesa-libwayland-egl-devel-$version.el7.x86_64.rpm"
+wayland_egl_devel_sha1="3ece8768e6bdd8603ce15d75f3b80895da038f15"
+mirror1="http://ci-files01-hki.intra.qt.io/input/wayland"
+mirror2=$mirror1
+
+echo "Installing libwayland-egl development packages on RHEL"
+
+# We're installing the packages with `--nodeps` because we've already installed
+# the Wayland libraries, but not through the package manager.
+
+DownloadURL $mirror1/$wayland_egl_rpm $mirror2/$wayland_egl_rpm $wayland_egl_sha1 /tmp/$wayland_egl_rpm
+sudo rpm -i --nodeps /tmp/$wayland_egl_rpm
+rm /tmp/$wayland_egl_rpm
+
+DownloadURL $mirror1/$wayland_egl_devel_rpm $mirror2/$wayland_egl_devel_rpm $wayland_egl_devel_sha1 /tmp/$wayland_egl_devel_rpm
+sudo rpm -i --nodeps /tmp/$wayland_egl_devel_rpm
+rm /tmp/$wayland_egl_devel_rpm
+
+echo "mesa-libwayland-egl = $version" >> ~/versions.txt

From 08c88de5c8d531fb4fee03a0c337dd93739d365a Mon Sep 17 00:00:00 2001
From: Johan Klokkhammer Helsing <johan.helsing@qt.io>
Date: Mon, 12 Feb 2018 14:22:59 +0100
Subject: [PATCH 4/6] Provisioning: Build and install Wayland 1.12.0 on RHEL
 7.4

So QtWayland will be built and included in the installer.

wayland-egl, however, will not be built, as that depends on support in mesa.

Task-number: QTBUG-66341
Change-Id: Id3f1825e00be9d278fce8ac2710a2640baafd332
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
---
 .../04-install-packages.sh                    |  2 +
 .../qtci-linux-RHEL-7.4-x86_64/60-wayland.sh  | 63 +++++++++++++++++++
 2 files changed, 65 insertions(+)
 create mode 100755 coin/provisioning/qtci-linux-RHEL-7.4-x86_64/60-wayland.sh

diff --git a/coin/provisioning/qtci-linux-RHEL-7.4-x86_64/04-install-packages.sh b/coin/provisioning/qtci-linux-RHEL-7.4-x86_64/04-install-packages.sh
index 23b80d89..84e42f7b 100755
--- a/coin/provisioning/qtci-linux-RHEL-7.4-x86_64/04-install-packages.sh
+++ b/coin/provisioning/qtci-linux-RHEL-7.4-x86_64/04-install-packages.sh
@@ -86,6 +86,8 @@ installPackages+=(bluez-libs-devel)
 # QtWebKit
 installPackages+=(libxml2-devel)
 installPackages+=(libxslt-devel)
+# For building Wayland from source
+installPackages+=(libffi-devel)
 
 sudo yum -y update
 sudo yum -y install "${installPackages[@]}"
diff --git a/coin/provisioning/qtci-linux-RHEL-7.4-x86_64/60-wayland.sh b/coin/provisioning/qtci-linux-RHEL-7.4-x86_64/60-wayland.sh
new file mode 100755
index 00000000..01155a46
--- /dev/null
+++ b/coin/provisioning/qtci-linux-RHEL-7.4-x86_64/60-wayland.sh
@@ -0,0 +1,63 @@
+#!/usr/bin/env bash
+
+#############################################################################
+##
+## Copyright (C) 2018 The Qt Company Ltd.
+## Contact: http://www.qt.io/licensing/
+##
+## This file is part of the provisioning scripts of the Qt Toolkit.
+##
+## $QT_BEGIN_LICENSE:LGPL21$
+## Commercial License Usage
+## Licensees holding valid commercial Qt licenses may use this file in
+## accordance with the commercial license agreement provided with the
+## Software or, alternatively, in accordance with the terms contained in
+## a written agreement between you and The Qt Company. For licensing terms
+## and conditions see http://www.qt.io/terms-conditions. For further
+## information use the contact form at http://www.qt.io/contact-us.
+##
+## GNU Lesser General Public License Usage
+## Alternatively, this file may be used under the terms of the GNU Lesser
+## General Public License version 2.1 or version 3 as published by the Free
+## Software Foundation and appearing in the file LICENSE.LGPLv21 and
+## LICENSE.LGPLv3 included in the packaging of this file. Please review the
+## following information to ensure the GNU Lesser General Public License
+## requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+## http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+##
+## As a special exception, The Qt Company gives you certain additional
+## rights. These rights are described in The Qt Company LGPL Exception
+## version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+##
+## $QT_END_LICENSE$
+##
+#############################################################################
+
+set -ex
+
+source "${BASH_SOURCE%/*}/../common/unix/DownloadURL.sh"
+
+version=1.12.0
+sha1="9a0dd96f53fff3e227035ed76caaa209b632ea8d"
+archive="wayland-$version.tar.xz"
+primaryUrl="https://wayland.freedesktop.org/releases/$archive"
+cacheUrl="http://ci-files01-hki.intra.qt.io/input/wayland/$archive"
+
+echo "Installing Wayland $version $sha1 on RHEL"
+
+targetFile="/tmp/$archive"
+DownloadURL $primaryUrl $cacheUrl $sha1 $targetFile
+tar xf $targetFile --directory /tmp/
+rm $targetFile
+
+cd /tmp/wayland-$version
+./configure \
+    --prefix=/usr \
+    --libdir=/usr/lib64 \
+    --disable-static \
+    --disable-documentation
+make
+sudo make install
+rm -rf /tmp/wayland-$version
+
+echo "wayland = $version" >> ~/versions.txt

From cb6709ce5c48a31ba1170c71494c1a3869ffa5bb Mon Sep 17 00:00:00 2001
From: Oliver Wolff <oliver.wolff@qt.io>
Date: Wed, 14 Feb 2018 07:46:11 +0100
Subject: [PATCH 5/6] Unify Windows provisioning scripts & improve error
 handling

While Coin should also see exit codes != 0 as error, we should
stick to one way of handling script errors. As Power Shell cmdlets
signal an error by throwing an exception we should do the same
(and that approach also works in Coin).

Additionally extracting 7zip files was unified across scripts by
using the existing helper function instead of reinventing the wheel
again and again.

A similar helper function was introduced for starting an external
application (and handling its errors).

Also echo and other "cmd" commands were replaced by their PowerShell
equivalents to have a unified approach across our Windows provisioning
scripts.

Change-Id: I70129ce38692f1396c33c13b33a2918485fa5271
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@qt.io>
---
 coin/provisioning/common/windows/03-conan.ps1 | 38 +++++-----
 .../common/windows/3dstudio_3rdparty.ps1      |  4 +-
 .../windows/allow-remote-desktop-access.ps1   |  3 +-
 .../common/windows/android-openssl.ps1        | 20 ++---
 coin/provisioning/common/windows/android.ps1  | 28 +++----
 coin/provisioning/common/windows/cmake.ps1    |  4 +-
 .../common/windows/disable-ntp.ps1            |  4 +-
 .../common/windows/disable-sleep.ps1          |  9 ++-
 .../common/windows/disable-uac.ps1            |  3 +-
 .../common/windows/disable-windefender.ps1    |  5 +-
 .../windows/disable-windows-updates.ps1       |  2 +-
 coin/provisioning/common/windows/dxsdk.ps1    |  8 +-
 .../common/windows/fbx_windows.ps1            | 12 ++-
 coin/provisioning/common/windows/helpers.ps1  | 74 ++++++++++--------
 coin/provisioning/common/windows/icu.ps1      |  4 +-
 .../windows/install-dependencywalker.ps1      | 15 ++--
 .../common/windows/install-git.ps1            | 15 ++--
 .../common/windows/install-jdk.ps1            | 21 +++--
 .../common/windows/install-mingw.ps1          | 11 ++-
 .../common/windows/install-notepad++.ps1      | 16 ++--
 .../common/windows/install-ruby.ps1           | 13 ++--
 .../common/windows/install-sevenzip.ps1       | 13 ++--
 .../windows/install-strawberry-perl.ps1       | 20 ++---
 coin/provisioning/common/windows/jom.ps1      |  2 +-
 coin/provisioning/common/windows/libclang.ps1 | 12 +--
 coin/provisioning/common/windows/libusb.ps1   |  2 +-
 .../common/windows/memorypershell.ps1         |  2 +-
 .../common/windows/mesa_llvmpipe.ps1          | 13 ++--
 .../common/windows/mqtt_broker.ps1            |  9 +--
 .../windows/msvc_2015_update3_patch.ps1       | 32 ++++----
 coin/provisioning/common/windows/mysql.ps1    | 23 +++---
 coin/provisioning/common/windows/ninja.ps1    |  2 +-
 coin/provisioning/common/windows/openssl.ps1  | 40 +++++-----
 .../common/windows/postgresql.ps1             | 35 ++++-----
 coin/provisioning/common/windows/python.ps1   | 27 +++----
 coin/provisioning/common/windows/python3.ps1  | 28 ++++---
 .../provisioning/common/windows/set-proxy.ps1 | 17 ++---
 .../common/windows/squishInstall.ps1          | 76 ++++++++-----------
 .../common/windows/unset-proxy.ps1            |  2 +-
 .../provisioning/common/windows/vc_redist.ps1 | 19 ++---
 .../provisioning/common/windows/vulkansdk.ps1 |  8 +-
 .../common/windows/win10-enable-devmode.ps1   | 10 +--
 .../common/windows/winrtrunner.ps1            |  4 +-
 .../common/windows/wsearch-off.ps1            |  3 +-
 .../qtci-windows-10-x86/05-msvc.ps1           |  6 +-
 .../qtci-windows-10-x86/08-python3.ps1        |  2 +-
 .../qtci-windows-10-x86_64/05-msvc.ps1        |  6 +-
 .../qtci-windows-10-x86_64/05-qnx_700.ps1     |  6 +-
 .../qtci-windows-10-x86_64/08-python3.ps1     |  2 +-
 .../90-install-virtualbox.ps1                 |  8 +-
 .../90-signing-tools.ps1                      |  2 +-
 .../qtci-windows-7-x86/07-vc_redist.ps1       |  2 +-
 .../qtci-windows-7-x86/08-python3.ps1         |  2 +-
 .../qtci-windows-7-x86_64/07-vc_redist.ps1    |  2 +-
 .../qtci-windows-7-x86_64/25-python3.ps1      |  2 +-
 55 files changed, 364 insertions(+), 384 deletions(-)

diff --git a/coin/provisioning/common/windows/03-conan.ps1 b/coin/provisioning/common/windows/03-conan.ps1
index 2c9d9f8d..d900f5a7 100644
--- a/coin/provisioning/common/windows/03-conan.ps1
+++ b/coin/provisioning/common/windows/03-conan.ps1
@@ -2,18 +2,12 @@
 
 $scriptsPath = "C:\Python27\Scripts"
 
-& "$scriptsPath\pip.exe" install --upgrade conan==0.24.0
+Run-Executable "$scriptsPath\pip.exe" "install --upgrade conan==0.24.0"
 
 # Use Qt Project repository by default
-& "$scriptsPath\conan.exe" remote add qtproject https://api.bintray.com/conan/qtproject/conan --insert
+Run-Executable "$scriptsPath\conan.exe" "remote add qtproject https://api.bintray.com/conan/qtproject/conan --insert"
 
-[Environment]::SetEnvironmentVariable("CI_CONAN_BUILDINFO_DIR", "C:\Utils\conanbuildinfos", "Machine")
-
-function Start-Process-Logged
-{
-    Write-Host "Start-Process", $args
-    Start-Process @args
-}
+Set-EnvironmentVariable "CI_CONAN_BUILDINFO_DIR" "C:\Utils\conanbuildinfos"
 
 function Run-Conan-Install
 {
@@ -43,18 +37,20 @@ function Run-Conan-Install
         $outpwd = "C:\Utils\conanbuildinfos\$($BuildinfoDir)\$($_.BaseName)"
         New-Item $outpwd -Type directory -Force
 
-        $process = Start-Process-Logged `
-            "$scriptsPath\conan.exe" `
-            -WorkingDirectory $outpwd `
-            -ArgumentList "install -f $conanfile --no-imports --verify $manifestsDir", `
-                '-s', ('compiler="' + $Compiler + '"'), `
-                "-s os=Windows -s arch=$Arch -s compiler.version=$CompilerVersion $extraArgs" `
-            -NoNewWindow -Wait -Verbose `
-            -PassThru # Return process object
-
-        if ($process.ExitCode -ne 0) {
-            Write-Host "conan exited with code $($process.ExitCode)"
-            Exit(1)
+        for ($i = 1; $i -le 5; $i++) {
+            try {
+                Push-Location $outpwd
+                Run-Executable "$scriptsPath\conan.exe" "install -f $conanfile --no-imports --verify $manifestsDir", `
+                    '-s', ('compiler="' + $Compiler + '"'), `
+                    "-s os=Windows -s arch=$Arch -s compiler.version=$CompilerVersion $extraArgs" `
+                break;
+            } catch {
+                if ($i -eq 5) {
+                    throw "Could not install conan content"
+                }
+            } finally {
+                Pop-Location
+            }
         }
 
         Copy-Item -Path $conanfile -Destination "$outpwd\conanfile.txt"
diff --git a/coin/provisioning/common/windows/3dstudio_3rdparty.ps1 b/coin/provisioning/common/windows/3dstudio_3rdparty.ps1
index b6804a77..924d8606 100644
--- a/coin/provisioning/common/windows/3dstudio_3rdparty.ps1
+++ b/coin/provisioning/common/windows/3dstudio_3rdparty.ps1
@@ -6,6 +6,6 @@ $url = "http://ci-files01-hki.intra.qt.io/input/3rdparty/Qt3DStudio-3rdparty-win
 Download $url $url $zip
 Verify-Checksum $zip "08D740D2EFB4CBCDE7D012908B89AA48DE5CD4E1"
 Extract-Zip $zip C:\Utils\Qt3DStudio3rdparty
-Remove-Item $zip
+Remove-Item -Path $zip
 
-[Environment]::SetEnvironmentVariable("QT3DSTUDIO_3RDPARTY_DIR", "C:/Utils/Qt3DStudio3rdparty", "Machine")
+Set-EnvironmentVariable "QT3DSTUDIO_3RDPARTY_DIR" "C:/Utils/Qt3DStudio3rdparty"
diff --git a/coin/provisioning/common/windows/allow-remote-desktop-access.ps1 b/coin/provisioning/common/windows/allow-remote-desktop-access.ps1
index 06ea20a4..cbf514ba 100644
--- a/coin/provisioning/common/windows/allow-remote-desktop-access.ps1
+++ b/coin/provisioning/common/windows/allow-remote-desktop-access.ps1
@@ -30,7 +30,8 @@
 ## $QT_END_LICENSE$
 ##
 #############################################################################
+. "$PSScriptRoot\helpers.ps1"
 
 # This script allows the Windows Remote Desktop Access
 
-reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server" /v fDenyTSConnections /t REG_DWORD /d 0 /f
+Run-Executable "reg.exe" "add `"HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server`" /v fDenyTSConnections /t REG_DWORD /d 0 /f"
diff --git a/coin/provisioning/common/windows/android-openssl.ps1 b/coin/provisioning/common/windows/android-openssl.ps1
index 798b3e45..b0363c4c 100644
--- a/coin/provisioning/common/windows/android-openssl.ps1
+++ b/coin/provisioning/common/windows/android-openssl.ps1
@@ -47,23 +47,23 @@ $destination = "C:\Utils\openssl-android-master"
 Download https://www.openssl.org/source/openssl-$version.tar.gz \\ci-files01-hki.intra.qt.io\provisioning\openssl\openssl-$version.tar.gz $zip
 Verify-Checksum $zip $sha1
 
-C:\Utils\sevenzip\7z.exe x $zip -oC:\Utils
-C:\Utils\sevenzip\7z.exe x C:\Utils\openssl-$version.tar -oC:\Utils
+Extract-7Zip $zip C:\Utils
+Extract-7Zip C:\Utils\openssl-$version.tar C:\Utils
 Rename-Item C:\Utils\openssl-$version $destination
-Remove-Item $zip
+Remove-Item -Path $zip
 Remove-Item C:\Utils\openssl-$version.tar
 
-set CC=C:\utils\android-ndk-r10e\toolchains\arm-linux-androideabi-4.9\prebuilt\windows\bin\arm-linux-androideabi-gcc
-set AR=C:\utils\android-ndk-r10e\toolchains\arm-linux-androideabi-4.9\prebuilt\windows\bin\arm-linux-androideabi-ar
-set ANDROID_DEV=C:\utils\android-ndk-r10e\platforms\android-18\arch-arm\usr
+Set-EnvironmentVariable "CC" "C:\utils\android-ndk-r10e\toolchains\arm-linux-androideabi-4.9\prebuilt\windows\bin\arm-linux-androideabi-gcc"
+Set-EnvironmentVariable "AR" "C:\utils\android-ndk-r10e\toolchains\arm-linux-androideabi-4.9\prebuilt\windows\bin\arm-linux-androideabi-ar"
+Set-EnvironmentVariable "ANDROID_DEV" "C:\utils\android-ndk-r10e\platforms\android-18\arch-arm\usr"
 
 # Make sure configure for openssl has a "make" and "perl" available
 $env:PATH = $env:PATH + ";C:\msys\1.0\bin;C:\strawberry\perl\bin"
 
-echo "Configuring OpenSSL $version for Android..."
-pushd $destination
-C:\msys\1.0\bin\bash.exe -c "c:/strawberry/perl/bin/perl Configure shared android"
-popd
+Write-Host "Configuring OpenSSL $version for Android..."
+Push-Location $destination
+Run-Executable "C:\msys\1.0\bin\bash.exe" "-c `"c:/strawberry/perl/bin/perl Configure shared android`""
+Pop-Location
 
 # Following command is needed when using version 1.1.0. With version 1.1.0 msys is not needed.
 # C:\mingw530\bin\mingw32-make.exe include\openssl\opensslconf.h
diff --git a/coin/provisioning/common/windows/android.ps1 b/coin/provisioning/common/windows/android.ps1
index f5e916e8..881d057e 100644
--- a/coin/provisioning/common/windows/android.ps1
+++ b/coin/provisioning/common/windows/android.ps1
@@ -70,23 +70,19 @@ function Install($1, $2, $3, $4) {
 }
 
 function SdkUpdate ($1, $2) {
-    echo "Running Android SDK update for $1..."
+    Write-Host "Running Android SDK update for $1..."
     cmd /c "echo y |$1\tools\android update sdk --no-ui --all --filter $2"
 }
 
-echo "Installing Android ndk $nkdVersion"
+Write-Host "Installing Android ndk $nkdVersion"
 Install $ndkCachedUrl $ndkZip $ndkChecksum $ndkOfficialUrl
-echo "Set environment variable ANDROID_NDK_HOME=$ndkFolder"
-[Environment]::SetEnvironmentVariable("ANDROID_NDK_HOME", $ndkFolder, "Machine")
-echo "Set environment variable ANDROID_NDK_ROOT=$ndkFolder"
-[Environment]::SetEnvironmentVariable("ANDROID_NDK_ROOT", $ndkFolder, "Machine")
+Set-EnvironmentVariable "ANDROID_NDK_HOME" $ndkFolder
+Set-EnvironmentVariable "ANDROID_NDK_ROOT" $ndkFolder
 
-#echo "Installing Android sdk $sdkVersion"
+#Write-Host "Installing Android sdk $sdkVersion"
 Install $sdkCachedUrl $sdkZip $sdkChecksum $sdkOfficialUrl
-echo "Set environment variable ANDROID_SDK_HOME=$sdkFolder"
-[Environment]::SetEnvironmentVariable("ANDROID_SDK_HOME", $sdkFolder, "Machine")
-echo "Set environment variable ANDROID_API_VERSION $sdkApiLevel"
-[Environment]::SetEnvironmentVariable("ANDROID_API_VERSION", $sdkApiLevel, "Machine")
+Set-EnvironmentVariable "ANDROID_SDK_HOME" $sdkFolder
+Set-EnvironmentVariable "ANDROID_API_VERSION" $sdkApiLevel
 
 # SDK update
 SdkUpdate $sdkFolder $sdkApiLevel
@@ -94,5 +90,11 @@ SdkUpdate $sdkFolder tools
 SdkUpdate $sdkFolder platform-tools
 SdkUpdate $sdkFolder build-tools-$sdkBuildToolsVersion
 
-# kill adb. This process prevent's provisioning to continue
-taskkill /im adb.exe /f
+# kill adb. This process prevents provisioning to continue
+$p = Get-Process -Name "adb.exe" -ErrorAction:SilentlyContinue
+if ($p -ne $null) {
+    Write-Host "Stopping adb.exe"
+    Stop-Process -Force $p
+} else {
+    Write-Host "adb.exe not running"
+}
diff --git a/coin/provisioning/common/windows/cmake.ps1 b/coin/provisioning/common/windows/cmake.ps1
index d7e26556..c0ead98e 100644
--- a/coin/provisioning/common/windows/cmake.ps1
+++ b/coin/provisioning/common/windows/cmake.ps1
@@ -40,7 +40,7 @@ $zip = "c:\users\qt\downloads\cmake-" + $version + "-win32-x86.zip"
 $officialurl = "https://cmake.org/files/v" + $majorminorversion + "/cmake-" + $version + "-win32-x86.zip"
 $cachedurl = "\\ci-files01-hki.intra.qt.io\provisioning\cmake\cmake-" + $version + "-win32-x86.zip"
 
-echo "Removing old cmake"
+Write-Host "Removing old cmake"
 Remove-Item "C:\CMake" -Force -Recurse -ErrorAction SilentlyContinue
 
 Download $officialurl $cachedurl $zip
@@ -52,5 +52,5 @@ Rename-Item $defaultinstallfolder C:\CMake
 
 Add-Path "C:\CMake\bin"
 
-echo "CMake = $version" >> ~\versions.txt
+Write-Output "CMake = $version" >> ~\versions.txt
 
diff --git a/coin/provisioning/common/windows/disable-ntp.ps1 b/coin/provisioning/common/windows/disable-ntp.ps1
index 4ec9d1bd..757f0d18 100644
--- a/coin/provisioning/common/windows/disable-ntp.ps1
+++ b/coin/provisioning/common/windows/disable-ntp.ps1
@@ -1,2 +1,4 @@
+. "$PSScriptRoot\helpers.ps1"
+
 # Disable the NTP from syncing
-w32tm /config /syncfromflags:NO
+Run-Executable "w32tm.exe" "/config /syncfromflags:NO"
diff --git a/coin/provisioning/common/windows/disable-sleep.ps1 b/coin/provisioning/common/windows/disable-sleep.ps1
index dda785ac..a3d194b7 100644
--- a/coin/provisioning/common/windows/disable-sleep.ps1
+++ b/coin/provisioning/common/windows/disable-sleep.ps1
@@ -30,10 +30,11 @@
 ## $QT_END_LICENSE$
 ##
 #############################################################################
+. "$PSScriptRoot\helpers.ps1"
 
 # This script prevents Windows from going to sleep
 
-powercfg -change -monitor-timeout-ac 0
-powercfg -change -standby-timeout-ac 0
-powercfg -change -disk-timeout-ac 0
-powercfg -change -hibernate-timeout-ac 0
+Run-Executable "powercfg.exe" "-change -monitor-timeout-ac 0"
+Run-Executable "powercfg.exe" "-change -standby-timeout-ac 0"
+Run-Executable "powercfg.exe" "-change -disk-timeout-ac 0"
+Run-Executable "powercfg.exe" "-change -hibernate-timeout-ac 0"
diff --git a/coin/provisioning/common/windows/disable-uac.ps1 b/coin/provisioning/common/windows/disable-uac.ps1
index 757c4a7e..c57f7e72 100644
--- a/coin/provisioning/common/windows/disable-uac.ps1
+++ b/coin/provisioning/common/windows/disable-uac.ps1
@@ -30,7 +30,8 @@
 ## $QT_END_LICENSE$
 ##
 #############################################################################
+. "$PSScriptRoot\helpers.ps1"
 
 # This script disables the Windows UAC
 
-C:\Windows\System32\cmd.exe /k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
+Run-Executable "reg.exe" "ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f"
diff --git a/coin/provisioning/common/windows/disable-windefender.ps1 b/coin/provisioning/common/windows/disable-windefender.ps1
index 2d1f0783..e508641e 100644
--- a/coin/provisioning/common/windows/disable-windefender.ps1
+++ b/coin/provisioning/common/windows/disable-windefender.ps1
@@ -2,4 +2,7 @@
 #
 # If disabled manually, windows will automatically enable it after
 # some period of time. Disabling it speeds up the builds.
-REG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender" /V DisableAntiSpyware /T REG_dWORD /D 1 /F
+
+. "$PSScriptRoot\helpers.ps1"
+
+Run-Executable "reg.exe" "ADD `"HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender`" /V DisableAntiSpyware /T REG_dWORD /D 1 /F"
diff --git a/coin/provisioning/common/windows/disable-windows-updates.ps1 b/coin/provisioning/common/windows/disable-windows-updates.ps1
index 05215e20..87414f03 100644
--- a/coin/provisioning/common/windows/disable-windows-updates.ps1
+++ b/coin/provisioning/common/windows/disable-windows-updates.ps1
@@ -43,7 +43,7 @@ if ($service.Status -eq "Stopped") {
     Write-Host "Windows Update service already stopped."
 } else {
     Write-Host "Stopping Windows Update service."
-    stop-service wuauserv
+    Stop-Service -Name "wuauserv" -Force
 }
 
 $startup = Get-WmiObject Win32_Service | Where-Object {$_.Name -eq "wuauserv"} | Select -ExpandProperty "StartMode"
diff --git a/coin/provisioning/common/windows/dxsdk.ps1 b/coin/provisioning/common/windows/dxsdk.ps1
index 629c7ac5..ce2bbeb3 100644
--- a/coin/provisioning/common/windows/dxsdk.ps1
+++ b/coin/provisioning/common/windows/dxsdk.ps1
@@ -11,9 +11,9 @@ $exe = "C:\Windows\Temp\$package"
 
 Download $officialUrl $cachedUrl $exe
 
-echo "Installing DirectX SDK"
-cmd /c "$exe /u"
+Write-Host "Installing DirectX SDK"
+Run-Executable $exe "/u"
 
-Remove-Item $exe
+Remove-Item -Path $exe
 
-echo "DirectX SDK = 9.29.1962 (Jun 10)" >> ~\versions.txt
+Write-Output "DirectX SDK = 9.29.1962 (Jun 10)" >> ~\versions.txt
diff --git a/coin/provisioning/common/windows/fbx_windows.ps1 b/coin/provisioning/common/windows/fbx_windows.ps1
index 00de579d..7b7abe43 100644
--- a/coin/provisioning/common/windows/fbx_windows.ps1
+++ b/coin/provisioning/common/windows/fbx_windows.ps1
@@ -51,18 +51,16 @@ $sha1 = "3690400625672bef6369bcf90dcde4d78b493b24"
 #$targetFile = "C:\Windows\Temp\$packageName"
 $targetFolder = "C:\Program Files\"
 
-#echo "Downloading '$installerName'"
+#Write-Host "Downloading '$installerName'"
 #Download $officialUrl $cacheUrl $targetFile
 #Verify-Checksum $targetFile $sha1
 
-echo "Extracting '$cacheUrl'"
-#Extract-7Zip $cacheUrl $targetFolder
-Start-Process -FilePath "C:\Utils\sevenzip\7z.exe" -ArgumentList "x -y `"$cacheUrl`" -o`"$targetFolder`"" -Wait
+Write-Host "Extracting '$cacheUrl'"
+Extract-7Zip $cacheUrl $targetFolder
 
 #Remove-Item -Recurse -Force "$packageName"
 
-echo "Adding environment variables."
-[Environment]::SetEnvironmentVariable("FBXSDK", "$targetFolder\Autodesk\FBX\FBX SDK\2016.1.2", [EnvironmentVariableTarget]::Machine)
+Set-EnvironmentVariable "FBXSDK" "$targetFolder\Autodesk\FBX\FBX SDK\2016.1.2"
 
-echo "FBX SDK = $version" >> ~\versions.txt
+Write-Output "FBX SDK = $version" >> ~\versions.txt
 
diff --git a/coin/provisioning/common/windows/helpers.ps1 b/coin/provisioning/common/windows/helpers.ps1
index 9c6706a2..45779c04 100644
--- a/coin/provisioning/common/windows/helpers.ps1
+++ b/coin/provisioning/common/windows/helpers.ps1
@@ -5,13 +5,32 @@ function Verify-Checksum
         [string]$Expected=$(throw("Checksum required")),
         [ValidateSet("sha1","md5")][string]$Algorithm="sha1"
     )
+    Write-Host "Verifying checksum of $File"
     $fs = new-object System.IO.FileStream $File, "Open"
     $algo = [type]"System.Security.Cryptography.$Algorithm"
     $crypto = $algo::Create()
     $hash = [BitConverter]::ToString($crypto.ComputeHash($fs)).Replace("-", "")
     $fs.Close()
     if ($hash -ne $Expected) {
-        Write-Error "Checksum verification failed, got: '$hash' expected: '$Expected'"
+        throw "Checksum verification failed, got: '$hash' expected: '$Expected'"
+    }
+}
+
+function Run-Executable
+{
+    Param (
+        [string]$Executable=$(throw("You must specify a program to run.")),
+        [string[]]$Arguments
+    )
+    if ([string]::IsNullOrEmpty($Arguments)) {
+        Write-Host "Running `"$Executable`""
+        $p = Start-Process -FilePath "$Executable" -Wait -PassThru
+    } else {
+        Write-Host "Running `"$Executable`" with arguments `"$Arguments`""
+        $p = Start-Process -FilePath "$Executable" -ArgumentList $Arguments -Wait -PassThru
+    }
+    if ($p.ExitCode -ne 0) {
+        throw "Process $($Executable) exited with exit code $($p.ExitCode)"
     }
 }
 
@@ -21,24 +40,21 @@ function Extract-7Zip
         [string]$Source,
         [string]$Destination
     )
-    echo "Extracting '$Source' to '$Destination'..."
+    Write-Host "Extracting '$Source' to '$Destination'..."
 
     if ((Get-Command "7z.exe" -ErrorAction SilentlyContinue) -eq $null) {
-        $zipExe = join-path (${env:ProgramFiles(x86)}, ${env:ProgramFiles} -ne $null)[0] '7-zip\7z.exe'
+        $zipExe = join-path (${env:ProgramFiles(x86)}, ${env:ProgramFiles}, ${env:ProgramW6432} -ne $null)[0] '7-zip\7z.exe'
         if (-not (test-path $zipExe)) {
-            $zipExe = join-path ${env:ProgramW6432} '7-zip\7z.exe'
+            $zipExe = "C:\Utils\sevenzip\7z.exe"
             if (-not (test-path $zipExe)) {
-                $zipExe = "C:\Utils\sevenzip\7z.exe"
-                if (-not (test-path $zipExe)) {
-                    throw "Could not find 7-zip."
-                }
+                throw "Could not find 7-zip."
             }
         }
     } else {
         $zipExe = "7z.exe"
     }
 
-    & $zipExe x $Source "-o$Destination" -y
+    Run-Executable "$zipExe" "x -y `"-o$Destination`" `"$Source`""
 }
 
 function Extract-Zip
@@ -47,7 +63,7 @@ function Extract-Zip
         [string]$Source,
         [string]$Destination
     )
-    echo "Extracting '$Source' to '$Destination'..."
+    Write-Host "Extracting '$Source' to '$Destination'..."
 
     New-Item -ItemType Directory -Force -Path $Destination
     $shell = new-object -com shell.application
@@ -66,7 +82,7 @@ function Extract-Dev-Folders-From-Zip
 
     $shell = new-object -com shell.application
 
-    echo "Extracting contents of $package"
+    Write-Host "Extracting contents of $package"
     foreach ($subDir in "lib", "include", "bin", "share") {
         $zip = $shell.Namespace($package + "\" + $zipDir + "\" + $subDir)
         if ($zip) {
@@ -97,12 +113,14 @@ function Download
     )
     $ProgressPreference = 'SilentlyContinue'
     try {
+        Write-Host "Downloading from cached location ($CachedUrl) to $Destination"
         if ($CachedUrl.StartsWith("http")) {
             Invoke-WebRequest -UseBasicParsing $CachedUrl -OutFile $Destination
         } else {
             Copy-Item $CachedUrl $Destination
         }
     } catch {
+        Write-Host "Cached download failed: Downloading from official location: $OfficialUrl"
         Invoke-WebRequest -UseBasicParsing $OfficialUrl -OutFile $Destination
     }
 }
@@ -112,37 +130,27 @@ function Add-Path
     Param (
         [string]$Path
     )
-    echo "Adding $Path to Path"
+    Write-Host "Adding $Path to Path"
 
     $oldPath = [System.Environment]::GetEnvironmentVariable('Path', 'Machine')
     [Environment]::SetEnvironmentVariable("Path", $oldPath + ";$Path", [EnvironmentVariableTarget]::Machine)
     $Env:PATH = [System.Environment]::GetEnvironmentVariable('Path', 'Machine')
 }
 
-function is64bitWinHost
-{
-    if(($env:PROCESSOR_ARCHITECTURE -eq "AMD64") -or ($env:PROCESSOR_ARCHITEW6432 -eq "AMD64")) {
-        return 1
-    }
-    else {
-        return 0
-    }
-}
-
-Function Execute-Command
+function Set-EnvironmentVariable
 {
     Param (
-       [string]$command
+        [string]$Key = $(BadParam("a key")),
+        [string]$Value = $(BadParam("a value."))
     )
-    Try {
-        echo "Executing command '$command'..."
-        $process = Start-Process -FilePath "cmd" -ArgumentList "/c $command" -PassThru -Wait -WindowStyle Hidden
-        if ($process.ExitCode) {throw "Error running command: '$command'"}
-    }
-    Catch {
-        $_.Exception.Message
-        exit 1
-    }
+    Write-Host "Setting environment variable `"$($Key)`" to `"$($Value)`""
+
+    [Environment]::SetEnvironmentVariable($Key, $Value, [EnvironmentVariableTarget]::Machine)
+}
+
+function Is64BitWinHost
+{
+    return [environment]::Is64BitOperatingSystem
 }
 
 function isProxyEnabled {
diff --git a/coin/provisioning/common/windows/icu.ps1 b/coin/provisioning/common/windows/icu.ps1
index be0f7277..a03d10c4 100644
--- a/coin/provisioning/common/windows/icu.ps1
+++ b/coin/provisioning/common/windows/icu.ps1
@@ -37,9 +37,9 @@
 
 $version = "53_1"
 
-if(($env:PROCESSOR_ARCHITECTURE -eq "AMD64") -or ($env:PROCESSOR_ARCHITEW6432 -eq "AMD64")) {
+if (Is64BitWinHost) {
 
 # FIXME: do we really want to use the 4.8.2 ICU build?
-[Environment]::SetEnvironmentVariable("CI_ICU_PATH_Mingw49", "C:\Utils\icu_53_1_Mingw_builds_4_8_2_posix_seh_64_devel\icu53_1", "Machine")
+Set-EnvironmentVariable "CI_ICU_PATH_Mingw49" "C:\Utils\icu_53_1_Mingw_builds_4_8_2_posix_seh_64_devel\icu53_1"
 
 }
diff --git a/coin/provisioning/common/windows/install-dependencywalker.ps1 b/coin/provisioning/common/windows/install-dependencywalker.ps1
index 3fc17052..1ccc0b7d 100644
--- a/coin/provisioning/common/windows/install-dependencywalker.ps1
+++ b/coin/provisioning/common/windows/install-dependencywalker.ps1
@@ -36,11 +36,10 @@
 # This script will install Dependency Walker 2.2.6000
 
 $version = "2.2.6000"
-if( (is64bitWinHost) -eq 1 ) {
+if (Is64BitWinHost) {
     $arch = "_x64"
     $sha1 = "4831D2A8376D64110FF9CD18799FE6C69509D3EA"
-}
-else {
+} else {
     $arch = "_x86"
     $sha1 = "bfec714057e8449b0246051be99ba46a7760bab9"
 }
@@ -49,15 +48,15 @@ $url_official = "http://www.dependencywalker.com/depends22" + $arch + ".zip"
 $dependsPackage = "C:\Windows\Temp\depends-$version.zip"
 
 $TARGETDIR = "C:\Utils\dependencywalker"
-if(!(Test-Path -Path $TARGETDIR )){
+if (!(Test-Path -Path $TARGETDIR )) {
     New-Item -ItemType directory -Path $TARGETDIR
 }
 Download $url_official $url_cache $dependsPackage
 Verify-Checksum $dependsPackage $sha1
 
-Get-ChildItem $dependsPackage | % {& "C:\Utils\sevenzip\7z.exe" "x" $_.fullname "-o$TARGETDIR"}
+Extract-7Zip $dependsPackage $TARGETDIR
 
-echo "Cleaning $dependsPackage.."
-Remove-Item -Recurse -Force "$dependsPackage"
+Write-Host "Cleaning $dependsPackage.."
+Remove-Item -Recurse -Force -Path "$dependsPackage"
 
-echo "Dependency Walker = $version" >> ~\versions.txt
+Write-Output "Dependency Walker = $version" >> ~\versions.txt
diff --git a/coin/provisioning/common/windows/install-git.ps1 b/coin/provisioning/common/windows/install-git.ps1
index 00700a22..c57e7199 100644
--- a/coin/provisioning/common/windows/install-git.ps1
+++ b/coin/provisioning/common/windows/install-git.ps1
@@ -35,11 +35,10 @@
 # Install Git version 2.13.0
 
 $version = "2.13.0"
-if( (is64bitWinHost) -eq 1 ) {
+if (Is64BitWinHost) {
     $arch = "-64-bit"
     $sha1 = "E1D7C6E5E16ACAF3C108064A2ED158F604FA29A7"
-}
-else {
+} else {
     $arch = "-32-bit"
     $sha1 = "03c7df2e4ef61ea6b6f9c0eb7e6d5151d9682aec"
 }
@@ -47,11 +46,11 @@ $gitPackage = "C:\Windows\Temp\Git-" + $version + $arch + ".exe"
 $url_cache = "\\ci-files01-hki.intra.qt.io\provisioning\windows\Git-" + $version + $arch + ".exe"
 $url_official = "https://github.com/git-for-windows/git/releases/download/v" + $version + ".windows.1/Git-" + $version + $arch + ".exe"
 
-echo "Fetching Git $version..."
+Write-Host "Fetching Git $version..."
 Download $url_official $url_cache $gitPackage
 Verify-Checksum $gitPackage $sha1
-echo "Installing Git $version..."
-cmd /c "$gitPackage /SILENT /COMPONENTS="icons,ext\reg\shellhere,assoc,assoc_sh""
-remove-item $gitPackage
+Write-Host "Installing Git $version..."
+Run-Executable "$gitPackage" "/SILENT /COMPONENTS=`"icons,ext\reg\shellhere,assoc,assoc_sh`""
+Remove-Item -Path $gitPackage
 
-echo "Git = $version" >> ~\versions.txt
+Write-Output "Git = $version" >> ~\versions.txt
diff --git a/coin/provisioning/common/windows/install-jdk.ps1 b/coin/provisioning/common/windows/install-jdk.ps1
index 63e5edaf..73750489 100644
--- a/coin/provisioning/common/windows/install-jdk.ps1
+++ b/coin/provisioning/common/windows/install-jdk.ps1
@@ -38,11 +38,10 @@
 $installdir = "C:\Program Files\Java\jdk1.8.0_144"
 
 $version = "8u144"
-if( (is64bitWinHost) -eq 1 ) {
+if (Is64BitWinHost) {
     $arch = "x64"
     $sha1 = "adb03bc3f4b40bcb3227687860798981d58e1858"
-}
-else {
+} else {
     $arch = "i586"
     $sha1 = "3b9ab95914514eaefd72b815c5d9dd84c8e216fc"
 }
@@ -51,13 +50,13 @@ $url_cache = "\\ci-files01-hki.intra.qt.io\provisioning\windows\jdk-" + $version
 $official_url = "http://download.oracle.com/otn-pub/java/jdk/8u144-b01/090f390dda5b47b9b721c7dfaa008135/jdk-" + $version + "-windows-" + $arch + ".exe"
 $javaPackage = "C:\Windows\Temp\jdk-$version.exe"
 
-echo "Fetching Java SE $version..."
+Write-Host "Fetching Java SE $version..."
 $ProgressPreference = 'SilentlyContinue'
 try {
-    echo "...from local cache"
+    Write-Host "...from local cache"
     Download $url_cache $url_cache $javaPackage
 } catch {
-    echo "...from oracle.com"
+    Write-Host "...from oracle.com"
     $client = new-object System.Net.WebClient
     $cookie = "oraclelicense=accept-securebackup-cookie"
     $client.Headers.Add("Cookie", $cookie)
@@ -68,11 +67,11 @@ try {
 
 Verify-Checksum $javaPackage $sha1
 
-cmd /c "$javaPackage /s SPONSORS=0"
-echo "Cleaning $javaPackage.."
-Remove-Item -Recurse -Force "$javaPackage"
+Run-Executable "$javaPackage" "/s SPONSORS=0"
+Write-Host "Cleaning $javaPackage.."
+Remove-Item -Recurse -Force -Path "$javaPackage"
 
-[Environment]::SetEnvironmentVariable("JAVA_HOME", "$installdir", [EnvironmentVariableTarget]::Machine)
+Set-EnvironmentVariable "JAVA_HOME" "$installdir"
 Add-Path "$installdir\bin"
 
-echo "Java SE = $version $arch" >> ~\versions.txt
+Write-Output "Java SE = $version $arch" >> ~\versions.txt
diff --git a/coin/provisioning/common/windows/install-mingw.ps1 b/coin/provisioning/common/windows/install-mingw.ps1
index f3e96318..8b7fe41d 100644
--- a/coin/provisioning/common/windows/install-mingw.ps1
+++ b/coin/provisioning/common/windows/install-mingw.ps1
@@ -55,14 +55,13 @@ function InstallMinGW
     Download $url_official $url_cache $mingwPackage
     Verify-Checksum $mingwPackage $sha1
 
-    Get-ChildItem $mingwPackage | % {& "C:\Utils\sevenzip\7z.exe" "x" $_.fullname "-o$TARGETDIR"}
+    Extract-7Zip $mingwPackage $TARGETDIR
 
-    echo "Adding MinGW environment variable."
-    [Environment]::SetEnvironmentVariable("$envvar", "$targetdir\mingw" + $win_arch.Substring($win_arch.get_Length()-2), [EnvironmentVariableTarget]::Machine)
+    Set-EnvironmentVariable "$envvar" ("$targetdir\mingw" + $win_arch.Substring($win_arch.get_Length()-2))
 
-    echo "Cleaning $mingwPackage.."
-    Remove-Item -Recurse -Force "$mingwPackage"
+    Write-Host "Cleaning $mingwPackage.."
+    Remove-Item -Recurse -Force -Path "$mingwPackage"
 
-    echo "MinGW = $version $release" >> ~\versions.txt
+    Write-Output "MinGW = $version $release" >> ~\versions.txt
 
 }
diff --git a/coin/provisioning/common/windows/install-notepad++.ps1 b/coin/provisioning/common/windows/install-notepad++.ps1
index 4fad6f6d..8f8635b3 100644
--- a/coin/provisioning/common/windows/install-notepad++.ps1
+++ b/coin/provisioning/common/windows/install-notepad++.ps1
@@ -36,11 +36,10 @@
 # This script will install Notepad++
 
 $version = "7.3"
-if( (is64bitWinHost) -eq 1 ) {
+if (Is64BitWinHost) {
     $arch = ".x64"
     $sha1 = "E7306DF1D6E81801FB4BE0868610DB70E979B0AA"
-}
-else {
+} else {
     $arch = ""
     $sha1 = "d4c403675a21cc381f640b92e596bae3ef958dc6"
 }
@@ -50,13 +49,12 @@ $nppPackage = "C:\Windows\Temp\npp-$version.exe"
 
 Download $url_official $url_cache $nppPackage
 Verify-Checksum $nppPackage $sha1
-cmd /c "$nppPackage /S"
+Run-Executable "$nppPackage" "/S"
 
-echo "Cleaning $nppPackage.."
-Remove-Item -Recurse -Force "$nppPackage"
+Write-Host "Cleaning $nppPackage.."
+Remove-Item -Recurse -Force -Path "$nppPackage"
 
-echo "Notepad++ = $version" >> ~\versions.txt
+Write-Output "Notepad++ = $version" >> ~\versions.txt
 
+Write-Host "Disabling auto updates."
 Rename-Item -Path "C:\Program Files\Notepad++\updater" -NewName "updater_disabled"
-
-echo "Auto-updating disabled."
diff --git a/coin/provisioning/common/windows/install-ruby.ps1 b/coin/provisioning/common/windows/install-ruby.ps1
index 3a9aa0d2..d3b949d1 100644
--- a/coin/provisioning/common/windows/install-ruby.ps1
+++ b/coin/provisioning/common/windows/install-ruby.ps1
@@ -36,11 +36,10 @@
 # This script will install Ruby
 
 $version = "2.4.2-2"
-if( (is64bitWinHost) -eq 1 ) {
+if (Is64BitWinHost) {
     $arch = "-x64"
     $sha1 = "c961c2752a183487bc42ed24beb7e931230fa7d5"
-}
-else {
+} else {
     $arch = "-x86"
     $sha1 = "2639a481c3b5ad11f57d5523cc41ca884286089e"
 }
@@ -50,9 +49,9 @@ $rubyPackage = "C:\Windows\Temp\rubyinstaller-$version.exe"
 
 Download $url_official $url_cache $rubyPackage
 Verify-Checksum $rubyPackage $sha1
-Start-Process -FilePath $rubyPackage -ArgumentList "/dir=C:\Ruby-$version$arch /tasks=modpath /verysilent" -Wait
+Run-Executable $rubyPackage "/dir=C:\Ruby-$version$arch /tasks=modpath /verysilent"
 
-echo "Cleaning $rubyPackage.."
-Remove-Item -Recurse -Force "$rubyPackage"
+Write-Host "Cleaning $rubyPackage.."
+Remove-Item -Recurse -Force -Path "$rubyPackage"
 
-echo "Ruby = $version" >> ~\versions.txt
+Write-Output "Ruby = $version" >> ~\versions.txt
diff --git a/coin/provisioning/common/windows/install-sevenzip.ps1 b/coin/provisioning/common/windows/install-sevenzip.ps1
index e7e73e9c..914895c1 100644
--- a/coin/provisioning/common/windows/install-sevenzip.ps1
+++ b/coin/provisioning/common/windows/install-sevenzip.ps1
@@ -38,11 +38,10 @@
 $version = "16.04"
 $nonDottedVersion = "1604"
 
-if( (is64bitWinHost) -eq 1 ) {
+if (Is64BitWinHost) {
     $arch = "-x64"
     $sha1 = "338A5CC5200E98EDD644FC21807FDBE59910C4D0"
-}
-else {
+} else {
     $arch = ""
     $sha1 = "dd1cb1163c5572951c9cd27f5a8dd550b33c58a4"
 }
@@ -54,11 +53,11 @@ $7zTargetLocation = "C:\Utils\sevenzip\"
 
 Download $url_official $url_cache $7zPackage
 Verify-Checksum $7zPackage $sha1
-Start-Process -FilePath $7zPackage -ArgumentList "/S","/D=$7zTargetLocation" -Wait
+Run-Executable $7zPackage "/S","/D=$7zTargetLocation"
 
-echo "Cleaning $7zPackage.."
-Remove-Item -Recurse -Force "$7zPackage"
+Write-Host "Cleaning $7zPackage.."
+Remove-Item -Recurse -Force -Path "$7zPackage"
 
 Add-Path $7zTargetLocation
 
-echo "7-Zip = $version" >> ~\versions.txt
+Write-Output "7-Zip = $version" >> ~\versions.txt
diff --git a/coin/provisioning/common/windows/install-strawberry-perl.ps1 b/coin/provisioning/common/windows/install-strawberry-perl.ps1
index 8b4a4a25..c80f16a4 100644
--- a/coin/provisioning/common/windows/install-strawberry-perl.ps1
+++ b/coin/provisioning/common/windows/install-strawberry-perl.ps1
@@ -36,23 +36,23 @@
 # This script installs Strawberry Perl
 
 $version = "5.26.0.1"
-if( (is64bitWinHost) -eq 1 ) {
+if (Is64BitWinHost) {
     $arch = "-64bit"
     $sha1 = "2AE2EDA36A190701399130CBFEE04D00E9BA036D"
-}
-else {
+} else {
     $arch = "-32bit"
     $sha1 = "b50b688a879f33941433774b2813bfd4b917e4ee"
 }
-$url_cache = "\\ci-files01-hki.intra.qt.io\provisioning\windows\strawberry-perl-" + $version + $arch + ".msi"
-$url_official = "http://strawberryperl.com/download/" + $version + "/strawberry-perl-" + $version + $arch + ".msi"
-$strawberryPackage = "C:\Windows\Temp\strawberry-installer-$version.msi"
+$installer_name = "strawberry-perl-" + $version + $arch + ".msi"
+$url_cache = "\\ci-files01-hki.intra.qt.io\provisioning\windows\" + $installer_name
+$url_official = "http://strawberryperl.com/download/" + $version + "/" + $installer_name
+$strawberryPackage = "C:\Windows\Temp\" + $installer_name
 
 Download $url_official $url_cache $strawberryPackage
 Verify-Checksum $strawberryPackage $sha1
-cmd /c "$strawberryPackage /QB INSTALLDIR=C:\strawberry REBOOT=REALLYSUPPRESS"
+Run-Executable "$strawberryPackage" "/QB INSTALLDIR=C:\strawberry REBOOT=REALLYSUPPRESS"
 
-echo "Cleaning $strawberryPackage.."
-Remove-Item -Recurse -Force "$strawberryPackage"
+Write-Host "Cleaning $strawberryPackage.."
+Remove-Item -Recurse -Force -Path "$strawberryPackage"
 
-echo "strawberry = $version" >> ~\versions.txt
+Write-Output "strawberry = $version" >> ~\versions.txt
diff --git a/coin/provisioning/common/windows/jom.ps1 b/coin/provisioning/common/windows/jom.ps1
index c1e2cbf7..efdbb97d 100644
--- a/coin/provisioning/common/windows/jom.ps1
+++ b/coin/provisioning/common/windows/jom.ps1
@@ -6,4 +6,4 @@ Invoke-WebRequest -UseBasicParsing http://download.qt.io/official_releases/jom/j
 Verify-Checksum $zip "80EE5678E714DE99DDAF5F7593AB04DB1C7928E4"
 Extract-Zip $zip C:\Utils\Jom
 
-[Environment]::SetEnvironmentVariable("CI_JOM_PATH", "C:\Utils\Jom", "Machine")
+Set-EnvironmentVariable "CI_JOM_PATH" "C:\Utils\Jom"
diff --git a/coin/provisioning/common/windows/libclang.ps1 b/coin/provisioning/common/windows/libclang.ps1
index 5a25d2eb..84d3656f 100644
--- a/coin/provisioning/common/windows/libclang.ps1
+++ b/coin/provisioning/common/windows/libclang.ps1
@@ -22,9 +22,9 @@ if ( $archVer -eq 64 ) {
     Download $url $url $zip
     Verify-Checksum $zip $sha1
 
-    C:\Utils\sevenzip\7z.exe x $zip -oC:\Utils\
+    Extract-7Zip $zip C:\Utils\
     Rename-Item C:\Utils\libclang $destination
-    del $zip
+    Remove-Item -Force -Path $zip
 }
 
 $sha1 = "64e826c00ae632fbb28655e6e1fa9194980e1205"
@@ -34,9 +34,9 @@ $destination = $baseDestination + "-32"
 Download $url $url $zip
 Verify-Checksum $zip $sha1
 
-C:\Utils\sevenzip\7z.exe x $zip -oC:\Utils\
+Extract-7Zip $zip C:\Utils\
 Rename-Item C:\Utils\libclang $destination
-del $zip
+Remove-Item -Force -Path $zip
 
-[Environment]::SetEnvironmentVariable("LLVM_INSTALL_DIR", $baseDestination + "-_ARCH_", [EnvironmentVariableTarget]::Machine)
-echo "libClang = $libclang_version" >> ~/versions.txt
+Set-EnvironmentVariable "LLVM_INSTALL_DIR" ($baseDestination + "-_ARCH_")
+Write-Output "libClang = $libclang_version" >> ~/versions.txt
diff --git a/coin/provisioning/common/windows/libusb.ps1 b/coin/provisioning/common/windows/libusb.ps1
index 38d8b8e6..d5340484 100644
--- a/coin/provisioning/common/windows/libusb.ps1
+++ b/coin/provisioning/common/windows/libusb.ps1
@@ -44,4 +44,4 @@ Verify-Checksum $archive "396a3224c306480f24a583850d923d06aa4377c1"
 Extract-7Zip $archive $libusb_location
 
 # Tell qt-apps/qdb build system where to find libusb
-[Environment]::SetEnvironmentVariable("LIBUSB_PATH", $libusb_location, "Machine")
+Set-EnvironmentVariable "LIBUSB_PATH" $libusb_location
diff --git a/coin/provisioning/common/windows/memorypershell.ps1 b/coin/provisioning/common/windows/memorypershell.ps1
index 2a8ebb68..6bc3c559 100644
--- a/coin/provisioning/common/windows/memorypershell.ps1
+++ b/coin/provisioning/common/windows/memorypershell.ps1
@@ -1,3 +1,3 @@
 # This is needed e.g. for Android NDK installation for Windows 7 x86
-echo "Increase value of MaxMemoryPerShellMB to avoid 'out of memory' exception"
+Write-Host "Increase value of MaxMemoryPerShellMB to avoid 'out of memory' exception"
 set-item wsman:localhost\Shell\MaxMemoryPerShellMB 2048
diff --git a/coin/provisioning/common/windows/mesa_llvmpipe.ps1 b/coin/provisioning/common/windows/mesa_llvmpipe.ps1
index 4a468e10..3f688f4c 100644
--- a/coin/provisioning/common/windows/mesa_llvmpipe.ps1
+++ b/coin/provisioning/common/windows/mesa_llvmpipe.ps1
@@ -47,14 +47,15 @@ function Extract-Mesa
         [string]$targetFolder
     )
     Write-Host "Installing Mesa from $downloadUrl to $targetFolder"
-    $localArchivePath = "C:\Windows\temp\opengl32sw.7z"
-    Invoke-WebRequest -UseBasicParsing $downloadUrl -OutFile $localArchivePath
-    Verify-Checksum $localArchivePath $sha1
-    Get-ChildItem $package | % {& "C:\Utils\sevenzip\7z.exe" "x" "-y" $_.fullname "-o$targetFolder"}
-    Remove-Item $localArchivePath
+    Write-Host "Downloading $downloadUrl to $package"
+    Invoke-WebRequest -UseBasicParsing $downloadUrl -OutFile $package
+    Verify-Checksum $package $sha1
+    Extract-7Zip $package $targetFolder
+    Write-Host "Removing $package"
+    Remove-Item -Path $package
 }
 
-if ( Test-Path C:\Windows\SysWOW64 ) {
+if (Is64BitWinHost) {
     Extract-Mesa $mesaOpenglUrl_64 $mesaOpenglSha1_64 "C:\Windows\System32"
     Extract-Mesa $mesaOpenglUrl_32 $mesaOpenglSha1_32 "C:\Windows\SysWOW64"
 } else {
diff --git a/coin/provisioning/common/windows/mqtt_broker.ps1 b/coin/provisioning/common/windows/mqtt_broker.ps1
index 35bb9823..b88f568e 100644
--- a/coin/provisioning/common/windows/mqtt_broker.ps1
+++ b/coin/provisioning/common/windows/mqtt_broker.ps1
@@ -33,7 +33,7 @@
 
 . "$PSScriptRoot\helpers.ps1"
 
-echo "MQTT: Downloading Paho test broker..."
+Write-Host "MQTT: Downloading Paho test broker..."
 $zip = "c:\users\qt\downloads\pahotest.zip"
 $externalUrl = "http://ci-files01-hki.ci.local/input/mqtt_broker/paho.mqtt.testing-c342c09dadc7a664d0a8befad1ca031f5a0b0bc0.zip"
 $internalUrl = "https://github.com/eclipse/paho.mqtt.testing/archive/c342c09dadc7a664d0a8befad1ca031f5a0b0bc0.zip"
@@ -42,9 +42,8 @@ $sha1 = "532fe145096cdd8d679f425cbfd883289150c968"
 Download $externalUrl $internalUrl $zip
 Verify-Checksum $zip $sha1
 
-echo "MQTT: Installing $zip..."
+Write-Host "MQTT: Installing $zip..."
 Extract-Zip $zip C:\Utils
-Remove-Item $zip
+Remove-Item -Path $zip
 
-echo "MQTT: Updating environment..."
-[Environment]::SetEnvironmentVariable("MQTT_TEST_BROKER_LOCATION", "C:\Utils\paho.mqtt.testing-c342c09dadc7a664d0a8befad1ca031f5a0b0bc0\interoperability\startbroker.py", "Machine")
+Set-EnvironmentVariable "MQTT_TEST_BROKER_LOCATION" "C:\Utils\paho.mqtt.testing-c342c09dadc7a664d0a8befad1ca031f5a0b0bc0\interoperability\startbroker.py"
diff --git a/coin/provisioning/common/windows/msvc_2015_update3_patch.ps1 b/coin/provisioning/common/windows/msvc_2015_update3_patch.ps1
index bab0f3a1..3a351f41 100644
--- a/coin/provisioning/common/windows/msvc_2015_update3_patch.ps1
+++ b/coin/provisioning/common/windows/msvc_2015_update3_patch.ps1
@@ -36,25 +36,31 @@
 # Original download page: https://msdn.microsoft.com/en-us/library/mt752379.aspx
 
 $version = "2015 update3 (KB3165756)"
-$package = "C:\Windows\Temp\vs14-kb3165756.exe"
+$packagePath = "C:\Windows\Temp"
+$package = $packagePath + "\vs14-kb3165756.exe"
 $url_cache = "http://ci-files01-hki.intra.qt.io/input/windows/vs14-kb3165756.exe"
 $url_official = "http://go.microsoft.com/fwlink/?LinkID=816878"
 $sha1 = "6a21d9b291ca75d44baad95e278fdc0d05d84c02"
-$preparedPackage="\\ci-files01-hki.intra.qt.io\provisioning\windows\vs14-kb3165756-update"
+$preparedPackage = "\\ci-files01-hki.intra.qt.io\provisioning\windows\vs14-kb3165756-update"
 
 if (Test-Path $preparedPackage) {
-    echo "Using prepared package"
-    pushd $preparedPackage
-    $commandLine = "$preparedPackage\vs14-kb3165756.exe"
+    # The prepared package contains updated packages so that not everything has to be downloaded
+    Write-Host "Using prepared package"
+    Copy-Item -Recurse $preparedPackage $packagePath
+    exit 0
+    # Remove the whole downloaded folder
+    $toRemove = $packagePath + "\vs14-kb3165756-update"
+    $executable = "$toRemove\vs14-kb3165756.exe"
 } else {
-    echo "Fetching patch for Visual Studio $version..."
+    Write-Host "Fetching patch for Visual Studio $version..."
     Download $url_official $url_cache $package
-    Verify-Checksum $package $sha1
-    $commandLine = $package
+    $executable = $package
+    # Remove the downloaded executable
+    $toRemove = $executable
 }
-echo "Installing patch for Visual Studio $version..."
-. $commandLine /norestart /passive
 
-if ($commandLine.StartsWith("C:\Windows")) {
-    remove-item $package
-}
+Verify-Checksum $executable $sha1
+Write-Host "Installing patch for Visual Studio $version..."
+Run-Executable $executable "/norestart /passive"
+
+Remove-Item -Force -Recurse -Path $toRemove
diff --git a/coin/provisioning/common/windows/mysql.ps1 b/coin/provisioning/common/windows/mysql.ps1
index 63088861..a22e439a 100644
--- a/coin/provisioning/common/windows/mysql.ps1
+++ b/coin/provisioning/common/windows/mysql.ps1
@@ -48,16 +48,16 @@ function DownloadAndInstall
         [string]$installPath
     )
 
-    echo "Fetching from URL ..."
+    Write-Host "Fetching from URL ..."
     Copy-Item $internalUrl $package
 
     $zipDir = [io.path]::GetFileNameWithoutExtension($package)
     Extract-Dev-Folders-From-Zip $package $zipDir $installPath
 
-    Remove-Item $package
+    Remove-Item -Path $package
 }
 
-if( (is64bitWinHost) -eq 1 ) {
+if (Is64BitWinHost) {
     # Install x64 bit version
     $architecture = "x64"
     $installFolder = "C:\Utils\my_sql\my_sql"
@@ -65,26 +65,23 @@ if( (is64bitWinHost) -eq 1 ) {
 
     DownloadAndInstall $internalUrl $packagex64 $installFolder
 
-    echo "Set environment variables ..."
-    [Environment]::SetEnvironmentVariable("MYSQL_INCLUDE_x64", "$installFolder\include", "Machine")
-    [Environment]::SetEnvironmentVariable("MYSQL_LIB_x64", "$installFolder\lib", "Machine")
+    Set-EnvironmentVariable "MYSQL_INCLUDE_x64" "$installFolder\include"
+    Set-EnvironmentVariable "MYSQL_LIB_x64" "$installFolder\lib"
 }
 
 # Install x86 bit version
 $architecture = "x86"
 $internalUrl = "\\ci-files01-hki.intra.qt.io\provisioning\windows\mysql-$version-win32.zip"
-if( (is64bitWinHost) -eq 1 ) {
+if (Is64BitWinHost) {
     $installFolder = "C:\Utils\my_sql\my_sql$architecture"
-}
-else {
+} else {
     $installFolder = "C:\Utils\my_sql\my_sql"
 }
 
 DownloadAndInstall $internalUrl $packagex86 $installFolder
 
-echo "Set environment variables ..."
-[Environment]::SetEnvironmentVariable("MYSQL_INCLUDE_x86", "$installFolder\include", "Machine")
-[Environment]::SetEnvironmentVariable("MYSQL_LIB_x86", "$installFolder\lib", "Machine")
+Set-EnvironmentVariable "MYSQL_INCLUDE_x86" "$installFolder\include"
+Set-EnvironmentVariable "MYSQL_LIB_x86" "$installFolder\lib"
 
 # Store version information to ~/versions.txt, which is used to print version information to provision log.
-echo "MySQL = $version" >> ~/versions.txt
+Write-Output "MySQL = $version" >> ~/versions.txt
diff --git a/coin/provisioning/common/windows/ninja.ps1 b/coin/provisioning/common/windows/ninja.ps1
index 08bf2579..dd60ad69 100644
--- a/coin/provisioning/common/windows/ninja.ps1
+++ b/coin/provisioning/common/windows/ninja.ps1
@@ -6,6 +6,6 @@ Download https://github.com/ninja-build/ninja/releases/download/v1.6.0/ninja-win
 Verify-Checksum $zip "E01093F6533818425F8EFB0843CED7DCAABEA3B2"
 
 Extract-Zip $zip C:\Utils\Ninja
-Remove-Item $zip
+Remove-Item -Path $zip
 
 Add-Path "C:\Utils\Ninja"
diff --git a/coin/provisioning/common/windows/openssl.ps1 b/coin/provisioning/common/windows/openssl.ps1
index f8268492..c884dd94 100644
--- a/coin/provisioning/common/windows/openssl.ps1
+++ b/coin/provisioning/common/windows/openssl.ps1
@@ -40,7 +40,7 @@ $version = "1_0_2j"
 $packagex64 = "C:\Windows\Temp\Win64OpenSSL-$version.exe"
 $packagex86 = "C:\Windows\Temp\Win32OpenSSL-$version.exe"
 
-if( (is64bitWinHost) -eq 1 ) {
+if (Is64BitWinHost) {
 
     # Install x64 bit version
     $architecture = "x64"
@@ -49,25 +49,24 @@ if( (is64bitWinHost) -eq 1 ) {
     $internalUrl = "\\ci-files01-hki.intra.qt.io\provisioning\openssl\Win64OpenSSL-$version.exe"
     $sha1 = "b1660dbdcc77e1b3d81d780c7167be1c75384d44"
 
-    echo "Fetching from URL ..."
+    Write-Host "Fetching from URL ..."
     Download $externalUrl $internalUrl $packagex64
     Verify-Checksum $packagex64 $sha1
-    echo "Installing $packagex64 ..."
-    cmd /c "$packagex64 /SP- /SILENT /LOG /SUPPRESSMSGBOXES /NORESTART /DIR=$installFolder"
+    Write-Host "Installing $packagex64 ..."
+    Run-Executable "$packagex64" "/SP- /SILENT /LOG /SUPPRESSMSGBOXES /NORESTART /DIR=$installFolder"
 
-    echo "Remove downloaded $packagex64 ..."
-    Remove-Item $packagex64
+    Write-Host "Remove downloaded $packagex64 ..."
+    Remove-Item -Path $packagex64
 
-    echo "Set $architecture environment variables ..."
-    [Environment]::SetEnvironmentVariable("OPENSSL_CONF_x64", "$installFolder\bin\openssl.cfg", "Machine")
-    [Environment]::SetEnvironmentVariable("OPENSSL_INCLUDE_x64", "$installFolder\include", "Machine")
-    [Environment]::SetEnvironmentVariable("OPENSSL_LIB_x64", "$installFolder\lib", "Machine")
+    Set-EnvironmentVariable "OPENSSL_CONF_x64" "$installFolder\bin\openssl.cfg"
+    Set-EnvironmentVariable "OPENSSL_INCLUDE_x64" "$installFolder\include"
+    Set-EnvironmentVariable "OPENSSL_LIB_x64" "$installFolder\lib"
 }
 
 # Install x86 bit version
 $architecture = "x86"
 
-if( (is64bitWinHost) -eq 1 ) {
+if (Is64BitWinHost) {
     $installFolder = "C:\openssl$architecture"
 } else {
     $installFolder = "C:\openssl"
@@ -77,19 +76,18 @@ $externalUrl = "https://slproweb.com/download/Win32OpenSSL-$version.exe"
 $internalUrl = "\\ci-files01-hki.intra.qt.io\provisioning\openssl\Win32OpenSSL-$version.exe"
 $sha1 = "29b31d20545214ab4e4c57afb20be2338c317cc3"
 
-echo "Fetching from URL ..."
+Write-Host "Fetching from URL ..."
 Download $externalUrl $internalUrl $packagex86
 Verify-Checksum $packagex86 $sha1
-echo "Installing $packagex86 ..."
-cmd /c "$packagex86 /SP- /SILENT /LOG /SUPPRESSMSGBOXES /NORESTART /DIR=$installFolder"
+Write-Host "Installing $packagex86 ..."
+Run-Executable "$packagex86" "/SP- /SILENT /LOG /SUPPRESSMSGBOXES /NORESTART /DIR=$installFolder"
 
-echo "Remove downloaded $packagex86 ..."
-Remove-Item $packagex86
+Write-Host "Remove downloaded $packagex86 ..."
+Remove-Item -Path $packagex86
 
-echo "Set $architecture environment variables ..."
-[Environment]::SetEnvironmentVariable("OPENSSL_CONF_x86", "$installFolder\bin\openssl.cfg", "Machine")
-[Environment]::SetEnvironmentVariable("OPENSSL_INCLUDE_x86", "$installFolder\include", "Machine")
-[Environment]::SetEnvironmentVariable("OPENSSL_LIB_x86", "$installFolder\lib", "Machine")
+Set-EnvironmentVariable "OPENSSL_CONF_x86" "$installFolder\bin\openssl.cfg"
+Set-EnvironmentVariable "OPENSSL_INCLUDE_x86" "$installFolder\include"
+Set-EnvironmentVariable "OPENSSL_LIB_x86" "$installFolder\lib"
 
 # Store version information to ~/versions.txt, which is used to print version information to provision log.
-echo "OpenSSL = $version" >> ~/versions.txt
+Write-Output "OpenSSL = $version" >> ~/versions.txt
diff --git a/coin/provisioning/common/windows/postgresql.ps1 b/coin/provisioning/common/windows/postgresql.ps1
index ca47f078..b9681809 100644
--- a/coin/provisioning/common/windows/postgresql.ps1
+++ b/coin/provisioning/common/windows/postgresql.ps1
@@ -40,7 +40,7 @@ $version = "9.1.9-1"
 $packagex64 = "C:\Windows\temp\postgresql-$version-windows-x64-binaries.zip"
 $packagex86 = "C:\Windows\temp\postgresql-$version-windows-binaries.zip"
 
-if( (is64bitWinHost) -eq 1 ) {
+if (Is64BitWinHost) {
     # Install x64 bit versions
     $architecture = "x64"
     $installFolder = "C:\Utils\postgresql\pgsql"
@@ -48,18 +48,17 @@ if( (is64bitWinHost) -eq 1 ) {
     $internalUrl = "\\ci-files01-hki.intra.qt.io\provisioning\windows\postgresql-$version-windows-x64-binaries.zip"
     $sha1 = "4da0453cdfda335e064d4437cf5bb9d356054cfd"
 
-    echo "Fetching from URL ..."
+    Write-Host "Fetching from URL ..."
     Download $externalUrl $internalUrl $packagex64
     Verify-Checksum $packagex64 $sha1
-    echo "Installing $packagex64 ..."
+    Write-Host "Installing $packagex64 ..."
     Extract-Dev-Folders-From-Zip $packagex64 "pgsql" $installFolder
 
-    echo "Remove downloaded $packagex64 ..."
-    Remove-Item $packagex64
+    Write-Host "Remove downloaded $packagex64 ..."
+    Remove-Item -Path $packagex64
 
-    echo "Set $architecture environment variables ..."
-    [Environment]::SetEnvironmentVariable("POSTGRESQL_INCLUDE_x64", "$installFolder\include", "Machine")
-    [Environment]::SetEnvironmentVariable("POSTGRESQL_LIB_x64", "$installFolder\lib", "Machine")
+    Set-EnvironmentVariable "POSTGRESQL_INCLUDE_x64" "$installFolder\include"
+    Set-EnvironmentVariable "POSTGRESQL_LIB_x64" "$installFolder\lib"
 }
 
 # Install x86 bit version
@@ -67,26 +66,24 @@ $architecture = "x86"
 $externalUrl = "http://get.enterprisedb.com/postgresql/postgresql-$version-windows-binaries.zip"
 $internalUrl = "\\ci-files01-hki.intra.qt.io\provisioning\windows\postgresql-$version-windows-binaries.zip"
 $sha1 = "eb4f01845e1592800edbb74f60944b6c0aca51a9"
-if( (is64bitWinHost) -eq 1 ) {
+if (Is64BitWinHost) {
     $installFolder = "C:\Utils\postgresql$architecture\pgsql"
-}
-else {
+} else {
     $installFolder = "C:\Utils\postgresql\pgsql"
 }
 
 
-echo "Fetching from URL..."
+Write-Host "Fetching from URL..."
 Download $externalUrl $internalUrl $packagex86
 Verify-Checksum $packagex86 $sha1
-echo "Installing $packagex86 ..."
+Write-Host "Installing $packagex86 ..."
 Extract-Dev-Folders-From-Zip $packagex86 "pgsql" $installFolder
 
-echo "Remove downloaded $packagex86 ..."
-Remove-Item $packagex86
+Write-Host "Remove downloaded $packagex86 ..."
+Remove-Item -Path $packagex86
 
-echo "Set $architecture environment variables ..."
-[Environment]::SetEnvironmentVariable("POSTGRESQL_INCLUDE_x86", "$installFolder\include", "Machine")
-[Environment]::SetEnvironmentVariable("POSTGRESQL_LIB_x86", "$installFolder\lib", "Machine")
+Set-EnvironmentVariable "POSTGRESQL_INCLUDE_x86" "$installFolder\include"
+Set-EnvironmentVariable "POSTGRESQL_LIB_x86" "$installFolder\lib"
 
 # Store version information to ~/versions.txt, which is used to print version information to provision log.
-echo "PostgreSQL = $version" >> ~/versions.txt
+Write-Output "PostgreSQL = $version" >> ~/versions.txt
diff --git a/coin/provisioning/common/windows/python.ps1 b/coin/provisioning/common/windows/python.ps1
index fe75aa35..ae9cbbbd 100644
--- a/coin/provisioning/common/windows/python.ps1
+++ b/coin/provisioning/common/windows/python.ps1
@@ -36,11 +36,10 @@
 # Python is required for building Qt 5 from source.
 
 $version = "2.7.13"
-if( (is64bitWinHost) -eq 1 ) {
+if (Is64BitWinHost) {
     $arch = ".amd64"
     $sha1 = "d9113142bae8829365c595735e1ad1f9f5e2894c"
-}
-else {
+} else {
     $arch = ""
     $sha1 = "7e3b54236dbdbea8fe2458db501176578a4d59c0"
 }
@@ -48,23 +47,25 @@ $package = "C:\Windows\temp\python-$version.msi"
 $externalUrl = "https://www.python.org/ftp/python/$version/python-$version" + $arch + ".msi"
 $internalUrl = "\\ci-files01-hki.intra.qt.io\provisioning\windows\python-$version" + $arch + ".msi"
 
-echo "Fetching from URL..."
+Write-Host "Fetching from URL..."
 Download $externalUrl $internalUrl $package
 Verify-Checksum $package $sha1
-echo "Installing $package..."
-cmd /c "msiexec /passive /i $package ALLUSERS=1"
+Write-Host "Installing $package..."
+Run-Executable "msiexec" "/passive /i $package ALLUSERS=1"
+
 # We need to change allowZip64 from 'False' to 'True' to be able to create ZIP files that use the ZIP64 extensions when the zipfile is larger than 2 GB
-echo "Chancing allowZip64 value to 'True'..."
+Write-Host "Changing allowZip64 value to 'True'..."
 (Get-Content C:\Python27\lib\zipfile.py) | ForEach-Object { $_ -replace "allowZip64=False", "allowZip64=True" } | Set-Content C:\Python27\lib\zipfile.py
-echo "Remove $package..."
-del $package
+Write-Host "Remove $package..."
+Remove-Item -Path $package
 
 Add-Path "C:\Python27;C:\Python27\Scripts"
 
-C:\Python27\python.exe -m ensurepip
+Run-Executable "C:\Python27\python.exe" "-m ensurepip"
+
 # Install python virtual env
-#if ( isProxyEnabled ) {
-#    echo "Using proxy with pip"
+#if (isProxyEnabled) {
+#    Write-Host "Using proxy with pip"
 #    $pip_args = "--proxy=" + (getProxy)
 #}
-C:\Python27\Scripts\pip.exe install virtualenv
+Run-Executable "C:\Python27\Scripts\pip.exe" "install virtualenv"
diff --git a/coin/provisioning/common/windows/python3.ps1 b/coin/provisioning/common/windows/python3.ps1
index 23ddb553..0ea93133 100644
--- a/coin/provisioning/common/windows/python3.ps1
+++ b/coin/provisioning/common/windows/python3.ps1
@@ -32,7 +32,6 @@
 ##
 #############################################################################
 
-param([Int32]$archVer=32)
 . "$PSScriptRoot\helpers.ps1"
 
 # This script installs Python $version.
@@ -43,32 +42,31 @@ $package = "C:\Windows\temp\python-$version.exe"
 $install_path = "C:\Python36"
 
 # check bit version
-if ( $archVer -eq 64 ) {
-    echo "Running in 64 bit system"
+if (Is64BitWinHost) {
+    Write-Host "Running in 64 bit system"
     $externalUrl = "https://www.python.org/ftp/python/$version/python-$version-amd64.exe"
     $internalUrl = "http://ci-files01-hki.intra.qt.io/input/windows/python-$version-amd64.exe"
     $sha1 = "bf54252c4065b20f4a111cc39cf5215fb1edccff"
-}
-else {
+} else {
     $externalUrl = "https://www.python.org/ftp/python/$version/python-$version.exe"
     $internalUrl = "http://ci-files01-hki.intra.qt.io/input/windows/python-$version.exe"
     $sha1 = "76c50b747237a0974126dd8b32ea036dd77b2ad1"
 }
 
-echo "Fetching from URL..."
+Write-Host "Fetching from URL..."
 Download $externalUrl $internalUrl $package
 Verify-Checksum $package $sha1
-echo "Installing $package..."
-cmd /c "$package /q TargetDir=$install_path"
-echo "Remove $package..."
-del $package
+Write-Host "Installing $package..."
+Run-Executable "$package" "/q TargetDir=$install_path"
+Write-Host "Remove $package..."
+Remove-Item -Path $package
 
-[Environment]::SetEnvironmentVariable("PYTHON3_PATH", "$install_path", [EnvironmentVariableTarget]::Machine)
-[Environment]::SetEnvironmentVariable("PIP3_PATH", "$install_path\Scripts", [EnvironmentVariableTarget]::Machine)
+Set-EnvironmentVariable "PYTHON3_PATH" "$install_path"
+Set-EnvironmentVariable "PIP3_PATH" "$install_path\Scripts"
 
 # Install python virtual env
-#if ( isProxyEnabled ) {
-#    echo "Using proxy with pip"
+#if (isProxyEnabled) {
+#    Write-Host "Using proxy with pip"
 #    $pip_args = "--proxy=" + (getProxy)
 #}
-cmd /c "$install_path\Scripts\pip3.exe install virtualenv"
+Run-Executable "$install_path\Scripts\pip3.exe" "install virtualenv"
diff --git a/coin/provisioning/common/windows/set-proxy.ps1 b/coin/provisioning/common/windows/set-proxy.ps1
index 914769f1..2b985b09 100644
--- a/coin/provisioning/common/windows/set-proxy.ps1
+++ b/coin/provisioning/common/windows/set-proxy.ps1
@@ -36,27 +36,24 @@ $n = $n.Split('=')
 New-Variable -Name $n[0] -Value $n[1]
 
 if (([string]::IsNullOrEmpty($proxy)) -or ($proxy -eq '""')) {
-    echo "No proxy is defined."
-}
-else {
-    echo "Checking proxy @ $proxy"
+    Write-Host "No proxy is defined."
+} else {
+    Write-Host "Checking proxy @ $proxy"
     $proxy = $proxy -replace '"', ""
     $webclient = New-Object System.Net.WebClient
     $proxy_obj = New-Object System.Net.WebProxy($proxy)
     $webclient.proxy = $proxy_obj
     try {
         $webpage = $webclient.DownloadData("http://proxy.intra.qt.io")
-    }
-    catch {
+    } catch {
         $ErrorMessage = $_.Exception.Message
         $FailedItem = $_.Exception.ItemName
         $iserror = $true
     }
     if ($iserror -eq $true) {
-        echo "Testing download with proxy does not work: $ErrorMessage, $FailedItem. Not setting proxy."
-    }
-    else {
-        echo "Setting proxy to: $proxy"
+        Write-Host "Testing download with proxy does not work: $ErrorMessage, $FailedItem. Not setting proxy."
+    } else {
+        Write-Host "Setting proxy to: $proxy"
         Set-ItemProperty -Path "HKCU:\Software\Microsoft\Windows\CurrentVersion\Internet Settings" -Name ProxyServer -Value "$proxy"
         Set-ItemProperty -Path "HKCU:\Software\Microsoft\Windows\CurrentVersion\Internet Settings" -Name ProxyEnable -Value 1
         Set-ItemProperty -Path "HKCU:\Software\Microsoft\Windows\CurrentVersion\Internet Settings" -Name ProxyOverride -Value 10.215
diff --git a/coin/provisioning/common/windows/squishInstall.ps1 b/coin/provisioning/common/windows/squishInstall.ps1
index 509eb93f..504b0077 100644
--- a/coin/provisioning/common/windows/squishInstall.ps1
+++ b/coin/provisioning/common/windows/squishInstall.ps1
@@ -50,10 +50,10 @@ $licensePackage = ".squish-3-license"
 $OSVersion = (get-itemproperty -Path "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion" -Name ProductName).ProductName
 
 # This can be removed when using vanilla os
-if((Test-Path -Path "$targetDir" )){
+if ((Test-Path -Path "$targetDir" )) {
     try {
-        echo "Renaming old Squish"
-        echo "Rename-Item -ErrorAction 'Stop' $targetDir $targetDir_deleted"
+        Write-Host "Renaming old Squish"
+        Write-Host "Rename-Item -ErrorAction 'Stop' $targetDir $targetDir_deleted"
         Rename-Item -ErrorAction 'Stop' "$targetDir" squish_deleted
     } catch {}
 }
@@ -72,13 +72,12 @@ Function DownloadAndInstallSquish {
     $SquishUrl = $squishBranchUrl + "\squish-" + $version + "-qt" + $qtBranch + "-" + $bit + "-" + $squishPackage + ".exe"
     $SquishInstaller = "$targetDir\$squishPackage.exe"
     $SquishParameters = "unattended=1 targetdir=$targetDir\$squishPackage"
-    $Command = "$SquishInstaller $SquishParameters"
 
-    echo "Fetching from URL ..."
+    Write-Host "Fetching from URL $squishUrl"
     Copy-Item "$SquishUrl" "$SquishInstaller"
-    echo "Installing Squish"
-    Execute-Command $Command
-    remove-item $SquishInstaller
+    Write-Host "Installing Squish"
+    Run-Executable "$SquishInstaller" "$SquishParameters"
+    Remove-Item -Path $SquishInstaller
 }
 
 Function DownloadSquishLicence {
@@ -90,26 +89,24 @@ Function DownloadSquishLicence {
     )
 
     # This can be removed when using vanilla os
-    if ($Env:SQUISH_LICENSEKEY_DIR)
-    {
-        echo "Removing SQUISH_LICENSEKEY_DIR env variable"
+    if ($Env:SQUISH_LICENSEKEY_DIR) {
+        Write-Host "Removing SQUISH_LICENSEKEY_DIR env variable"
         Remove-Item Env:\SQUISH_LICENSEKEY_DIR
     }
 
-    echo "Installing Squish license to home directory"
+    Write-Host "Installing Squish license to home directory"
     Copy-Item $squishUrl\$licensePackage ~\$licensePackage
 }
 
-echo "Creating $targetDir"
+Write-Host "Creating $targetDir"
 New-Item -ErrorAction Ignore -ItemType directory -Path "$targetDir"
 
 DownloadSquishLicence $licensePackage $squishUrl $targetDir
 
-if(($OSVersion -eq "Windows 10 Enterprise") -or ($OSVersion -eq "Windows 8.1 Enterprise"))
-{
+if (($OSVersion -eq "Windows 10 Enterprise") -or ($OSVersion -eq "Windows 8.1 Enterprise")) {
     # Squish for MinGW
     $squishPackageMingw = "mingw_gcc53_posix_dwarf"
-    echo "Installing $squishPackageMingw"
+    Write-Host "Installing $squishPackageMingw"
     DownloadAndInstallSquish $version $squishBranchUrl $qtBranch win32 $targetDir $squishPackageMingw
     mv $targetDir\$squishPackageMingw $targetDir\mingw
 
@@ -117,56 +114,45 @@ if(($OSVersion -eq "Windows 10 Enterprise") -or ($OSVersion -eq "Windows 8.1 Ent
     $squishPackage = "msvc14"
     $squishPackage64bit = "msvc14_64"
 
-    if(($env:PROCESSOR_ARCHITECTURE -eq "AMD64") -or ($env:PROCESSOR_ARCHITEW6432 -eq "AMD64"))
-    {
-        echo "Installing $squishPackage_64"
+    if (Is64BitWinHost) {
+        Write-Host "Installing $squishPackage64bit"
         DownloadAndInstallSquish $version $squishBranchUrl $qtBranch win64 $targetDir $squishPackage
-        mv $targetDir\$squishPackage $targetDir\$squishPackage64bit
+        Rename-Item $targetDir\$squishPackage $targetDir\$squishPackage64bit
     }
 
-    echo "Installing $squishPackage"
+    Write-Host "Installing $squishPackage"
     DownloadAndInstallSquish $version $squishBranchUrl $qtBranch win32 $targetDir $squishPackage
 }
-if($OSVersion -eq "Windows 8.1 Enterprise")
-{
+if ($OSVersion -eq "Windows 8.1 Enterprise") {
     # Squish for Visual Studio 2013
     $squishPackage64bit = "msvc12_64"
 
-    if(($env:PROCESSOR_ARCHITECTURE -eq "AMD64") -or ($env:PROCESSOR_ARCHITEW6432 -eq "AMD64"))
-    {
-        echo "Installing $squishPackage_64"
+    if (Is64BitWinHost) {
+        Write-Host "Installing $squishPackage_64"
         DownloadAndInstallSquish $version $squishBranchUrl $qtBranch win64 $targetDir $squishPackage
-        mv $targetDir\$squishPackage $targetDir\$squishPackage64bit
-    }
-    else
-    {
-        echo "Change secret file to normal one"
-        attrib -h C:\Users\qt\.squish-3-license
+        Rename-Item $targetDir\$squishPackage $targetDir\$squishPackage64bit
+    } else {
+        Write-Host "Change secret file to normal one"
+        Run-Executable "attrib.exe" "-h C:\Users\qt\.squish-3-license"
     }
 }
-if($OSVersion -eq "Windows 7")
-{
-    # Windows 7
-
+if  ($OSVersion -eq "Windows 7 Enterprise") {
     # Squish for MinGW
     $squishPackageMingw = "mingw_gcc53_posix_dwarf"
-    echo "Installing $squishPackageMingw"
+    Write-Host "Installing $squishPackageMingw"
     DownloadAndInstallSquish $version $squishBranchUrl $qtBranch win32 $targetDir $squishPackageMingw
-    mv $targetDir\$squishPackageMingw $targetDir\mingw
+    Rename-Item $targetDir\$squishPackageMingw $targetDir\mingw
 
     # Squish for Visual Studio 2015
     $squishPackage = "msvc14"
     $squishPackage64bit = "msvc14_64"
 
-    echo "Installing $squishPackage"
+    Write-Host "Installing $squishPackage"
     DownloadAndInstallSquish $version $squishBranchUrl $qtBranch win32 $targetDir $squishPackage
 
-    if(($env:PROCESSOR_ARCHITECTURE -eq "AMD64") -or ($env:PROCESSOR_ARCHITEW6432 -eq "AMD64"))
-    {
-        echo "Installing $squishPackage64bit"
+    if (Is64BitWinHost) {
+        Write-Host "Installing $squishPackage64bit"
         DownloadAndInstallSquish $version $squishBranchUrl $qtBranch win64 $targetDir $squishPackage
-        mv $targetDir\$squishPackage $targetDir\$squishPackage64bit
+        Rename-Item $targetDir\$squishPackage $targetDir\$squishPackage64bit
     }
-
-
 }
diff --git a/coin/provisioning/common/windows/unset-proxy.ps1 b/coin/provisioning/common/windows/unset-proxy.ps1
index 86374ec1..d0a374ef 100644
--- a/coin/provisioning/common/windows/unset-proxy.ps1
+++ b/coin/provisioning/common/windows/unset-proxy.ps1
@@ -31,7 +31,7 @@
 ##
 #############################################################################
 
-echo "Disabling proxy"
+Write-Host "Disabling proxy"
 $dcs = (Get-ItemProperty -Path "HKCU:\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections").DefaultConnectionSettings
 $dcs[8] = $_ -band 0xF7
 Set-ItemProperty -Path "HKCU:\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections" -Name DefaultConnectionSettings -Value $dcs
diff --git a/coin/provisioning/common/windows/vc_redist.ps1 b/coin/provisioning/common/windows/vc_redist.ps1
index 4a8376b6..c356ca2c 100644
--- a/coin/provisioning/common/windows/vc_redist.ps1
+++ b/coin/provisioning/common/windows/vc_redist.ps1
@@ -32,21 +32,18 @@
 ##
 #############################################################################
 
-param([Int32]$archVer=32)
 . "$PSScriptRoot\helpers.ps1"
 
 # This script installs Visual C++ Redistributable for Visual Studio 2015
 # This is a dependency of the current python3 version
 
-# check bit version
-if ( $archVer -eq 64 ) {
-    echo "Running in 64 bit system"
+if (Is64BitWinHost) {
+    Write-Host "Running in 64 bit system"
     $arch = "x64"
     $externalUrl = "https://download.microsoft.com/download/9/3/F/93FCF1E7-E6A4-478B-96E7-D4B285925B00/vc_redist.x64.exe"
     $internalUrl = "http://ci-files01-hki.intra.qt.io/input/windows/vc_redist.x64.exe"
     $sha1 = "3155cb0f146b927fcc30647c1a904cd162548c8c"
-}
-else {
+} else {
     $arch = "x86"
     $externalUrl = "https://download.microsoft.com/download/9/3/F/93FCF1E7-E6A4-478B-96E7-D4B285925B00/vc_redist.x86.exe"
     $internalUrl = "http://ci-files01-hki.intra.qt.io/input/windows/vc_redist.x86.exe"
@@ -55,10 +52,10 @@ else {
 
 $package = "C:\Windows\temp\vc_redist.$arch.exe"
 
-echo "Fetching from URL..."
+Write-Host "Fetching from URL..."
 Download $externalUrl $internalUrl $package
 Verify-Checksum $package $sha1
-echo "Installing $package..."
-Start-Process -FilePath $package -ArgumentList "/q" -Wait
-echo "Remove $package..."
-del $package
+Write-Host "Installing $package..."
+Run-Executable $package "/q"
+Write-Host "Remove $package..."
+Remove-Item -Force -Path $package
diff --git a/coin/provisioning/common/windows/vulkansdk.ps1 b/coin/provisioning/common/windows/vulkansdk.ps1
index bade33ef..1629e676 100644
--- a/coin/provisioning/common/windows/vulkansdk.ps1
+++ b/coin/provisioning/common/windows/vulkansdk.ps1
@@ -40,9 +40,9 @@ $url_cache = "\\ci-files01-hki.ci.local\provisioning\windows\VulkanSDK-" +$versi
 $vulkanPackage = "C:\Windows\Temp\vulkan-installer-$version.exe"
 
 Copy-Item $url_cache $vulkanPackage
-cmd /c "$vulkanPackage /S"
+Run-Executable $vulkanPackage "/S"
 
-echo "Cleaning $vulkanPackage.."
-Remove-Item -Recurse -Force "$vulkanPackage"
+Write-Host "Cleaning $vulkanPackage.."
+Remove-Item -Recurse -Force -Path "$vulkanPackage"
 
-echo "Vulkan SDK = $version" >> ~\versions.txt
+Write-Output "Vulkan SDK = $version" >> ~\versions.txt
diff --git a/coin/provisioning/common/windows/win10-enable-devmode.ps1 b/coin/provisioning/common/windows/win10-enable-devmode.ps1
index 2d7733c0..9b2d5cc1 100644
--- a/coin/provisioning/common/windows/win10-enable-devmode.ps1
+++ b/coin/provisioning/common/windows/win10-enable-devmode.ps1
@@ -3,14 +3,12 @@
 # In order to run auto tests for UWP, we have to enable developer mode on Windows 10 machines.
 # https://docs.microsoft.com/en-us/windows/uwp/get-started/enable-your-device-for-development
 
-if ([environment]::Is64BitOperatingSystem) {
+. "$PSScriptRoot\helpers.ps1"
+
+if (Is64BitWinHost) {
     $bitness = "/reg:64"
 } else {
     $bitness = "/reg:32"
 }
 
-REG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\AppModelUnlock" /V  AllowDevelopmentWithoutDevLicense /T REG_DWORD /D 1 /F $bitness
-if ($LastExitCode -ne 0) {
-    Write-Host "Could not enable Developer Mode."
-    exit 1
-}
+Run-Executable "reg.exe" "ADD `"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\AppModelUnlock`" /V  AllowDevelopmentWithoutDevLicense /T REG_DWORD /D 1 /F $bitness"
diff --git a/coin/provisioning/common/windows/winrtrunner.ps1 b/coin/provisioning/common/windows/winrtrunner.ps1
index d53c12d6..89a64344 100644
--- a/coin/provisioning/common/windows/winrtrunner.ps1
+++ b/coin/provisioning/common/windows/winrtrunner.ps1
@@ -6,6 +6,6 @@ $url = "http://download.qt.io/development_releases/prebuilt/winrtrunner/winrtrun
 Download $url $url $zip
 Verify-Checksum $zip "C19098A4C9DBD20EDEB4E5E0D3E6A5BBBCA73C42"
 Extract-Zip $zip C:\Utils\winrtrunner
-Remove-Item $zip
+Remove-Item -Path $zip
 
-[Environment]::SetEnvironmentVariable("CI_WINRTRUNNER_PATH", "C:\Utils\winrtrunner", "Machine")
+Set-EnvironmentVariable "CI_WINRTRUNNER_PATH" "C:\Utils\winrtrunner"
diff --git a/coin/provisioning/common/windows/wsearch-off.ps1 b/coin/provisioning/common/windows/wsearch-off.ps1
index 09c45bbd..12e959bd 100644
--- a/coin/provisioning/common/windows/wsearch-off.ps1
+++ b/coin/provisioning/common/windows/wsearch-off.ps1
@@ -1,3 +1,4 @@
+. "$PSScriptRoot\helpers.ps1"
 
 # Disable the windows search indexing service
-sc.exe config WSearch start= disabled
+Run-Executable "sc.exe" "config WSearch start= disabled"
diff --git a/coin/provisioning/qtci-windows-10-x86/05-msvc.ps1 b/coin/provisioning/qtci-windows-10-x86/05-msvc.ps1
index 1de57a66..d019fc92 100644
--- a/coin/provisioning/qtci-windows-10-x86/05-msvc.ps1
+++ b/coin/provisioning/qtci-windows-10-x86/05-msvc.ps1
@@ -34,10 +34,10 @@
 # Visual Studios are pre-provisioned to tier1 images
 
 # MSVC 2015 Update 3
-echo "Visual Studio 2015 = Version 14.0.25421.3 Update 3" >> ~\versions.txt
+Write-Output "Visual Studio 2015 = Version 14.0.25421.3 Update 3" >> ~\versions.txt
 
 # MSVC 2017
-echo "Visual Studio 2017 = Version 15.1 (26403.7)" >> ~\versions.txt
+Write-Output "Visual Studio 2017 = Version 15.1 (26403.7)" >> ~\versions.txt
 
 # MSVC 2017 Build Tools
-echo "Visual Studio 2017 Build Tools = Version 15.1 (26403.7)" >> ~\versions.txt
+Write-Output "Visual Studio 2017 Build Tools = Version 15.1 (26403.7)" >> ~\versions.txt
diff --git a/coin/provisioning/qtci-windows-10-x86/08-python3.ps1 b/coin/provisioning/qtci-windows-10-x86/08-python3.ps1
index 28299307..998e6bae 100644
--- a/coin/provisioning/qtci-windows-10-x86/08-python3.ps1
+++ b/coin/provisioning/qtci-windows-10-x86/08-python3.ps1
@@ -1 +1 @@
-. "$PSScriptRoot\..\common\windows\python3.ps1" 32
+. "$PSScriptRoot\..\common\windows\python3.ps1"
diff --git a/coin/provisioning/qtci-windows-10-x86_64/05-msvc.ps1 b/coin/provisioning/qtci-windows-10-x86_64/05-msvc.ps1
index 1de57a66..d019fc92 100644
--- a/coin/provisioning/qtci-windows-10-x86_64/05-msvc.ps1
+++ b/coin/provisioning/qtci-windows-10-x86_64/05-msvc.ps1
@@ -34,10 +34,10 @@
 # Visual Studios are pre-provisioned to tier1 images
 
 # MSVC 2015 Update 3
-echo "Visual Studio 2015 = Version 14.0.25421.3 Update 3" >> ~\versions.txt
+Write-Output "Visual Studio 2015 = Version 14.0.25421.3 Update 3" >> ~\versions.txt
 
 # MSVC 2017
-echo "Visual Studio 2017 = Version 15.1 (26403.7)" >> ~\versions.txt
+Write-Output "Visual Studio 2017 = Version 15.1 (26403.7)" >> ~\versions.txt
 
 # MSVC 2017 Build Tools
-echo "Visual Studio 2017 Build Tools = Version 15.1 (26403.7)" >> ~\versions.txt
+Write-Output "Visual Studio 2017 Build Tools = Version 15.1 (26403.7)" >> ~\versions.txt
diff --git a/coin/provisioning/qtci-windows-10-x86_64/05-qnx_700.ps1 b/coin/provisioning/qtci-windows-10-x86_64/05-qnx_700.ps1
index d2864281..991ccfa6 100644
--- a/coin/provisioning/qtci-windows-10-x86_64/05-qnx_700.ps1
+++ b/coin/provisioning/qtci-windows-10-x86_64/05-qnx_700.ps1
@@ -42,6 +42,6 @@ Download $url $url $zip
 Verify-Checksum $zip "DD3346A3429C06B59BF4D45CE0782F737D2424C7"
 Extract-7Zip $zip C:\
 
-[Environment]::SetEnvironmentVariable("QNX_700", "C:\QNX700", "Machine")
-echo "QNX SDP = 7.0.0" >> ~/versions.txt
-del $zip
+Set-EnvironmentVariable "QNX_700" "C:\QNX700"
+Write-Output "QNX SDP = 7.0.0" >> ~/versions.txt
+Remove-Item -Path $zip
diff --git a/coin/provisioning/qtci-windows-10-x86_64/08-python3.ps1 b/coin/provisioning/qtci-windows-10-x86_64/08-python3.ps1
index 3201032d..998e6bae 100644
--- a/coin/provisioning/qtci-windows-10-x86_64/08-python3.ps1
+++ b/coin/provisioning/qtci-windows-10-x86_64/08-python3.ps1
@@ -1 +1 @@
-. "$PSScriptRoot\..\common\windows\python3.ps1" 64
+. "$PSScriptRoot\..\common\windows\python3.ps1"
diff --git a/coin/provisioning/qtci-windows-10-x86_64/90-install-virtualbox.ps1 b/coin/provisioning/qtci-windows-10-x86_64/90-install-virtualbox.ps1
index 298375a3..d1b6ac9e 100644
--- a/coin/provisioning/qtci-windows-10-x86_64/90-install-virtualbox.ps1
+++ b/coin/provisioning/qtci-windows-10-x86_64/90-install-virtualbox.ps1
@@ -43,9 +43,9 @@ $virtualboxPackage = "C:\Windows\Temp\virtualbox-$version.exe"
 
 Download $url_official $url_cache $virtualboxPackage
 Verify-Checksum $virtualboxPackage $sha1
-Start-Process $virtualboxPackage -ArgumentList "--silent" -Wait
+Run-Executable $virtualboxPackage "--silent"
 
-echo "Cleaning $virtualboxPackage.."
-Remove-Item -Recurse -Force "$virtualboxPackage"
+Write-Output "Cleaning $virtualboxPackage.."
+Remove-Item -Recurse -Force -Path "$virtualboxPackage"
 
-echo "VirtualBox = $version" >> ~\versions.txt
+Write-Output "VirtualBox = $version" >> ~\versions.txt
diff --git a/coin/provisioning/qtci-windows-10-x86_64/90-signing-tools.ps1 b/coin/provisioning/qtci-windows-10-x86_64/90-signing-tools.ps1
index 7d01edac..854bee01 100644
--- a/coin/provisioning/qtci-windows-10-x86_64/90-signing-tools.ps1
+++ b/coin/provisioning/qtci-windows-10-x86_64/90-signing-tools.ps1
@@ -41,4 +41,4 @@ $destination = "C:\Windows\temp\sign.zip"
 
 Download $url $url $destination
 Extract-Zip "$destination" "C:\Utils"
-Remove-Item "$destination"
+Remove-Item -Path "$destination"
diff --git a/coin/provisioning/qtci-windows-7-x86/07-vc_redist.ps1 b/coin/provisioning/qtci-windows-7-x86/07-vc_redist.ps1
index b9d8153e..1e465fe1 100644
--- a/coin/provisioning/qtci-windows-7-x86/07-vc_redist.ps1
+++ b/coin/provisioning/qtci-windows-7-x86/07-vc_redist.ps1
@@ -1 +1 @@
-. "$PSScriptRoot\..\common\windows\vc_redist.ps1" 32
+. "$PSScriptRoot\..\common\windows\vc_redist.ps1"
diff --git a/coin/provisioning/qtci-windows-7-x86/08-python3.ps1 b/coin/provisioning/qtci-windows-7-x86/08-python3.ps1
index 28299307..998e6bae 100644
--- a/coin/provisioning/qtci-windows-7-x86/08-python3.ps1
+++ b/coin/provisioning/qtci-windows-7-x86/08-python3.ps1
@@ -1 +1 @@
-. "$PSScriptRoot\..\common\windows\python3.ps1" 32
+. "$PSScriptRoot\..\common\windows\python3.ps1"
diff --git a/coin/provisioning/qtci-windows-7-x86_64/07-vc_redist.ps1 b/coin/provisioning/qtci-windows-7-x86_64/07-vc_redist.ps1
index b8c1ce9f..1e465fe1 100644
--- a/coin/provisioning/qtci-windows-7-x86_64/07-vc_redist.ps1
+++ b/coin/provisioning/qtci-windows-7-x86_64/07-vc_redist.ps1
@@ -1 +1 @@
-. "$PSScriptRoot\..\common\windows\vc_redist.ps1" 64
+. "$PSScriptRoot\..\common\windows\vc_redist.ps1"
diff --git a/coin/provisioning/qtci-windows-7-x86_64/25-python3.ps1 b/coin/provisioning/qtci-windows-7-x86_64/25-python3.ps1
index 3201032d..998e6bae 100644
--- a/coin/provisioning/qtci-windows-7-x86_64/25-python3.ps1
+++ b/coin/provisioning/qtci-windows-7-x86_64/25-python3.ps1
@@ -1 +1 @@
-. "$PSScriptRoot\..\common\windows\python3.ps1" 64
+. "$PSScriptRoot\..\common\windows\python3.ps1"

From 399cface187da11899ed95b8d7ac57dca0bc2e0f Mon Sep 17 00:00:00 2001
From: Qt Submodule Update Bot <qt_submodule_update_bot@qt-project.org>
Date: Tue, 27 Feb 2018 03:01:52 +0200
Subject: [PATCH 6/6] Update submodules on '5.11' in qt5

Change-Id: I7c090de84c5cf511ec7cea69900546edf6039c39
Reviewed-by: Qt Submodule Update Bot <qt_submodule_update_bot@qt-project.org>
---
 qtbase           | 2 +-
 qtdeclarative    | 2 +-
 qtquickcontrols  | 2 +-
 qtquickcontrols2 | 2 +-
 qtremoteobjects  | 2 +-
 qtwayland        | 2 +-
 qtwebengine      | 2 +-
 7 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/qtbase b/qtbase
index 9df6f336..1f6bd8bf 160000
--- a/qtbase
+++ b/qtbase
@@ -1 +1 @@
-Subproject commit 9df6f3367e971d4fad63e59bb42615e2b7a580ce
+Subproject commit 1f6bd8bfb2206480ca5b5c267da38659e6cff20e
diff --git a/qtdeclarative b/qtdeclarative
index 53d1e9ed..e41d0672 160000
--- a/qtdeclarative
+++ b/qtdeclarative
@@ -1 +1 @@
-Subproject commit 53d1e9ed21d25e65a2f13606af479838f5f21fe7
+Subproject commit e41d067227eb6225b05df88ab724708588fa5304
diff --git a/qtquickcontrols b/qtquickcontrols
index 6c9f0bfc..94988415 160000
--- a/qtquickcontrols
+++ b/qtquickcontrols
@@ -1 +1 @@
-Subproject commit 6c9f0bfcc4bc6511686559dd87c29cfaa3e88b33
+Subproject commit 949884153ae14724c30f17c75656aa0c6f072559
diff --git a/qtquickcontrols2 b/qtquickcontrols2
index f1f884d3..3de42498 160000
--- a/qtquickcontrols2
+++ b/qtquickcontrols2
@@ -1 +1 @@
-Subproject commit f1f884d353c5a9190e200cc04e94d4658c69a23b
+Subproject commit 3de42498fce9bacbdda71e4c8a9af494434e2993
diff --git a/qtremoteobjects b/qtremoteobjects
index db6d07b4..93dc5555 160000
--- a/qtremoteobjects
+++ b/qtremoteobjects
@@ -1 +1 @@
-Subproject commit db6d07b4a51813e72eee474a6ee2e91438841fa7
+Subproject commit 93dc5555a7f815f4366886e3af57718c4c169fcb
diff --git a/qtwayland b/qtwayland
index ec495c98..72999738 160000
--- a/qtwayland
+++ b/qtwayland
@@ -1 +1 @@
-Subproject commit ec495c98189f1d849e793108b09b5af0ce2c8984
+Subproject commit 72999738489b5251d025c954a77c93e8e1fdfd9d
diff --git a/qtwebengine b/qtwebengine
index 73e72f7b..b0af137a 160000
--- a/qtwebengine
+++ b/qtwebengine
@@ -1 +1 @@
-Subproject commit 73e72f7b5f3dc9b08a18a2afc286576951b424b9
+Subproject commit b0af137a8c58af2538e500808ae1da6133a7d284