Microsoft replaced the old CleanUp Utility with a much more intelligent and safer tool: the Program Install and Uninstall Troubleshooter. This modern utility is the official recommendation for users facing installation errors.
The Windows Installer CleanUp Utility (MSICUU2.exe) was originally designed to remove configuration information for programs that failed to uninstall properly. It didn’t delete the actual program files; instead, it wiped the registry settings related to the Windows Installer. This allowed users to attempt a fresh installation without "already installed" error messages. download microsoft cleanup utility
If you came here looking for a way to "clean up" your PC to make it run faster, rather than fixing a broken uninstaller, Windows now has these features built-in. You no longer need to download external utilities for general maintenance. Microsoft replaced the old CleanUp Utility with a