Thoughts about setup and deployment issues, WiX, XNA, the .NET Framework and Visual Studio
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I have heard from many customers over the past months who have had issues installing Update Rollup 2 for Windows XP Media Center 2005 because of a conflict with Windows XP hotfix KB904706. I previously posted a workaround that requires you to uinstall KB904706 and then attempt to install Update Rollup 2 again.
In a few cases, this workaround does not help because KB904706 was installed with the command line switch that causes the remove button in Add/Remove Programs to be suppressed. If you find yourself in this situation and cannot remove KB904706, the following steps will hopefully help:
Restore the remove option in Add/Remove Programs for KB904706
The above steps should cause the Remove button to be available again in Add/Remove Programs. Then you can uninstall KB904706 and try to install Update Rollup 2 again using these steps.
Manually rename KB904706 files
I have seen a couple of cases where even the above steps do not solve the Update Rollup 2 installation issues. If this happens in your scenario, please try to manually rename the files %windir%\system32\dllcache\quartz.dll and %windir%\system32\quartz.dll and then run Update Rollup 2 setup one more time.
Manually install the pieces of Update Rollup 2
If the manual renaming does not work either, please try to use the manual install steps for the Update Rollup 2 prerequisites.
If nothing else works
If all else fails, please contact me and I will try to help figure something out.