Based on current Microsoft Learn documentation , the tool is typically found here after a partial installation: C:\Program Files (x86)\Microsoft Visual Studio\Installer\resources\app\layout\InstallCleanup.exe
If your search query included "upd" because you are trying to install a specific update (like Update 4 or Update 5) for VS 2012, the pre-clean tool is vital.
To address this, Microsoft and the community referenced – primarily the Visual Studio 2012 Uninstall / Cleanup Utility (unofficial but widely used) and Microsoft’s official InstallCleanup.exe or vssetup.msi cleanup switches.
