Windows 7 - Windows installer has stopped working

This is a pain if it happens. I haven't seen it at all on a couple of installations, but on another I had this problem pop up constantly after installing Microsoft Office. Everything that uses the Windows Installer seems to crash without really even trying to run. It turns out it's to do with the Customer Experience Improvement Program!
  1. Navigate to HKLM\Software\Microsoft\SQMClient\Windows\DisabledSessions in the registry and delete all the string values, except for the 'Default' entry.
  2. Run the group policy editor - gpedit.msc
  3. Navigate to Computer Configuration -> Administrative Templates -> System -> Internet Communication Management -> Internet Communication settings.
  4. On the right find 'Turn off Windows Customer Experience Improvement Program' and double click it, which brings up a dialog where you can select 'Enabled'.
Solution found at


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