http://blogs.technet.com/b/askperf/archive/2012/01/06/case-of-the-windows-installer-installation-failure-and-appcompat-shim.aspxGood morning AskPerf! Anshuman Ghosh here to chat about an issue I recently worked where a specific Windows Installer package failed to install on a Windows 2008 R2 Server.&#160; Basic Windows Installer troubleshooting took place, including the abilityen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)http://blogs.technet.com/b/askperf/archive/2012/01/06/case-of-the-windows-installer-installation-failure-and-appcompat-shim.aspx#3485440Thu, 08 Mar 2012 13:12:15 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3485440Anshuman<p>The issue is not with any shim, but the fact shimming was altogether disabled. Ensuring that appcompat engine is enabled, gets us through the installation</p> <div style="clear:both;"></div><img src="http://blogs.technet.com/aggbug.aspx?PostID=3485440" width="1" height="1">http://blogs.technet.com/b/askperf/archive/2012/01/06/case-of-the-windows-installer-installation-failure-and-appcompat-shim.aspx#3474374Sat, 07 Jan 2012 16:27:38 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3474374Wil<p>Good find but you might want to go into Microsoft compatibility toolkit to modify the shim instead to stop it from running that individual shim rather than disabling it all together.</p> <div style="clear:both;"></div><img src="http://blogs.technet.com/aggbug.aspx?PostID=3474374" width="1" height="1">