Seems to be more difficult than ever trying to find a working download link for the Microsoft Windows Installer Clean-Up utility but here it is in a Zip file ready to download! No need to install it; just download, unzip it and run the msicuu.exe file.
If you haven't used it before, it can assist with uninstalling problematic MSI installers and such like.
I understand it is no longer supported by Microsoft but still can be handy to have in your toolkit. Be warned, Microsoft would rather you go here