Windows Installer CleanUp Utility
3.00 / June 25, 2010
|Operating system||Windows NT, Windows 2000, Windows XP, Windows Server 2003|
|License||Freeware (without support and warranty)|
The Windows Installer CleanUp Utility (MSICUU2.exe) was a software utility for the Microsoft Windows operating system designed to solve uninstallation problems of programs that use the Windows Installer technology. It looks up registry references and files related to Windows Installer that were installed by various programs, and forcibly wipes invalid entries out. It works in all 32-bit and 64-bit versions of Microsoft Windows.
Microsoft first released the utility in 1999 to help Windows-based computers clean up installed programs that would either refuse or pretend not to remove themselves from the "add/remove programs" feature in Microsoft Windows.
The utility only changes registry values and files associated with the Windows Installer portion on the program. It does not remove many files from the computer, and is only to be used as a last-ditch attempt when dealing with a buggy program. Only users who have logged in as system administrators may run the utility.
For developers who have problems with the Windows Installer automatically repairing their own installations on developer machines (when the developer has manually updated some of the binaries), this utility is ideal to remove the Windows Installer information whilst leaving the actual installation intact.
Microsoft retired the Windows Installer CleanUp utility on June 25, 2010, due to conflicts with Office 2007. The Microsoft Fix It at http://support.microsoft.com/mats/Program_Install_and_Uninstall/ replaced it.
- "README FOR WINDOWS INSTALLER CLEANUP UTILITY", "JUNE 1999". Microsoft Knowledge Base Article Q238413 (has been revoked, but references can still be found). Microsoft Corporation.
- "Description of the Windows Installer CleanUp Utility (Revision: 7.6)". Microsoft Help and Support website. Microsoft Corporation. 3 June 2009. Retrieved 4 December 2009.
- Whitney, Lance (August 2008). "Utility Spotlight: Windows Installer CleanUp Utility". TechNet Magazine. Microsoft Corporation. Retrieved 4 December 2009.
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