Windows Installer Clean. Up Utility Wikipedia. The Windows Installer Clean. Up Utility MSICUU2. Microsoft Windowsoperating 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 3. Microsoft Windows. Microsoft first released the utility in 1. Windows based computers clean up installed programs that would either refuse or pretend not to remove themselves from the addremove programs feature in Microsoft Windows. The utility only changes registry values and files associated with the Windows Installer portion on the program. Sony Ericsson Xperia Arc Factory Reset Code. 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 Clean. Up utility on June 2. Office 2. 00. 7. The Microsoft Fix It at http support. ProgramInstallandUninstall replaced it. ReferenceseditREADME FOR WINDOWS INSTALLER CLEANUP UTILITY, JUNE 1. Microsoft Knowledge Base Article Q2. Microsoft Corporation. External linksedit. Some of the MSI and MSP files in the Windows Installer folder are orphaned and no longer needed which you can safely delete but the problem is identifying them. Here. Kaspersky Internet Security 2015. The Windows 8. 1 compatible Kaspersky Internet Security 2015 installer is available for download on Kaspersky Lab official website.