Vs-preclean-vs.exe Visual Studio 2012

Visual Studio 2012 is version 11.0 internally. This distinguishes it from VS2010 (10.0) and VS2013 (12.0).

If you previously had a "Developer Preview" or "Beta" of Visual Studio 11 (the internal name for VS 2012), this tool scouts the registry and file system to ensure those early versions are properly uninstalled before the final version is put in place. vs-preclean-vs.exe visual studio 2012

Or in the VC tools directory: