The .NET Framework Cleanup Tool will quickly remove the version of the .NET Framework you select from a PC.
This can be very useful if the .NET Framework has become corrupted, preventing some programs from running, and the system is so damaged that you can't repair, remove or reinstall the affected Framework version. It is a last resort, though, so if you've not tried a repair installation, a reinstall, or the other usual troubleshooting steps, then do that first. The .NET Framework Cleanup Tool author has a troubleshooting guide that explains what to do.
If all else fails, though, download the cleanup tool, unzip and launch it (the program is portable, no installation is required). Then choose the version of the .NET Framework that you'd like to cleanly remove, click Cleanup Now and it'll be properly removed for you.
The .NET Framework Cleanup Tool supports the following Framework products:
- .NET Framework - All Versions
- .NET Framework - All Versions (Tablet PC and Media Center)
- .NET Framework - All Versions (Windows Server 2003)
- .NET Framework - All Versions (Windows Vista and Windows Server 2008)
- .NET Framework 1.0
- .NET Framework 1.1
- .NET Framework 2.0
- .NET Framework 3.0
- .NET Framework 3.5
- .NET Framework 4
- .NET Framework 4.5
And this edition of the program now also runs on Windows 8. However, it won't remove versions that are included as a part of your operating system.
While this can be a life-saver, the author says that the removal process will strip out shared Registry keys required by other Framework versions, so you'll need to be prepared to reinstall all of these (not just the one you're removing). Check the tool's home page for more details.
Only go ahead with this if you understand exactly what you're doing: if you're not ready to reinstall then the tool could cripple your PC.