If you are specifically looking for the pre-clean or setup cleanup functionality, you have a few options:
If the tool fails, fall back to the manual registry and file cleanup method. And remember: always back up your data and registry before running any system-level cleanup utility. microsoft visual studio 2012 pre clean tool download
It clears residual data such as temporary files and settings from prior preview builds to ensure a clean slate for the final release. Important Alternatives If you are specifically looking for the pre-clean
If you cannot locate the original Pre-Clean tool, Microsoft has released newer, more robust utilities that handle VS 2012 removal effectively: Can not install visual studio ultimate 2012 - Super User Microsoft has released newer
Microsoft maintains an archive of older utilities. Search for: