Fix PowerShell exit code with Hotfix of KB2552055 to be used in packer-windows autounattend.xml

hotfix-KB2552055.bat

@echo off
:: Windows 7 / Windows 2008 R2 require KB2552055 hotfix
:: This fixes a problem with wrong exitcode 0 instead of custom exitcode in PowerShell 2.0
setlocal
if defined ProgramFiles(x86) (
  set link=http://hotfixv4.microsoft.com/Windows%%207/Windows%%20Server2008%%20R2%%20SP1/sp2/Fix373932/7600/free/438167_intl_x64_zip.exe
  set msufilename=%TEMP%\Windows6.1-KB2552055-x64.msu
) else (
  set link=http://hotfixv4.microsoft.com/Windows%%207/Windows%%20Server2008%%20R2%%20SP1/sp2/Fix373932/7600/free/438164_intl_i386_zip.exe
  set msufilename=%TEMP%\Windows6.1-KB2552055-x86.msu
)
set zipfilename=%TEMP%\KB2552055.zip

echo Downloading Hotfix 2552055
powershell -Command "(New-Object System.Net.WebClient).DownloadFile('%link%', '%zipfilename%')" <NUL
echo Extracting Hotfix 2552055
powershell -Command "(New-Object -com Shell.Application).NameSpace('%TEMP%').CopyHere((New-Object -Com Shell.Application).NameSpace('%zipfilename%').items())" <NUL
echo Installing Hotfix 2552055
wusa %msufilename% /quiet /norestart

echo Cleanup Hotfix temp files
del /Q %msufilename%
del /Q %zipfilename%

This script is able to patch PowerShell 2.0 of Windows 7 / Windows 2008 R2 to have a correct exit code needed for Vagrant 1.6 to work properly.

Incorrect error code when you run a PowerShell script at a command prompt in Windows 7 or in Windows Server 2008 R2
http://support.microsoft.com/kb/2552055

Writing this script I learned a lot:

• To get the download of a KB entry you will receive an email with the the download URL of the Hotfix.
• The Exe file is a self-extracting ZIP container created with the Xceed Absolute Packager v1.1
• It seems that is does not have any command line options to extract it in an unattended way.
• There are two KB entries that explain command line options of Hotfix tools, but not all KB exe files support the options described (as I found out).
• Extracting the exe with unzip from a Mac works out of the box.
• Extracting the exe from Windows with PowerShell doesn't work.
• Renaming the exe to have a .zip extension then works for PowerShell as well.
• Installing a msu Update package does not work with msiexec.exe, but with wusa.exe.
• There is no reboot needed as described in the Hotfix, probably as long as there is no running instance of PowerShell.exe.
• That's why I use a Windows Batch script to start the whole download, extract, patch and test steps.
• Tested on Windows 7 x64, but should also work on Windows 7 x86.
• To make it work in packer-windows, I had to tweak it a little further and put it into the autounattend.xml.
• It does not work from an OpenSSH session used by packer, so it moved into autounattend.xml