Running 32-bit MMC snap-ins in App-V on 64-bit Windows

I came across an issue today whilst sequencing an application on Windows 7 x64 that contained a start menu shortcut to a .MSC file. During sequencing the application launched fine but it would not do so on the client. The solution is to modify the OSD to point to MMC.exe with the -32 switch and the path to your .MSC file wrapped in quotes:

<CODEBASE HREF="*" GUID="*" FILENAME="%CSIDL_SYSTEM%\mmc.exe" PARAMETERS="-32 &quot;%SFT_MNT%\ROOTFOLDER\PathToFile.msc&quot;" SYSGUARDFILE="*" SIZE="*"/>

You will also need to set the __COMPAT_LAYER environment variable if MMC.exe requests elevation:

<ENVLIST>
  <ENVIRONMENT VARIABLE="__COMPAT_LAYER">RunAsInvoker</ENVIRONMENT>
</ENVLIST>

This should allow it to work on both x86 and x64 clients.

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