Use Aaron Stebner’s tool:
- Aaron Stebner’s WebLog: Automated cleanup tool to remove the .NET Framework 1.0, 1.1, 2.0, 3.0 and 3.5
Once .NET is completely removed re-install in the following order:
- .NET v1.1
- .NET v1.1 SP1
- .NET v3.5 SP1
- .NET v4
The download can be had from here:
This is a very dangerous tool to use and should only be used when there are no other options!
This is definitely a tool to keep on the Technician’s Thumb Drive!
Microsoft Small Business Specialists
Co-Author: SBS 2008 Blueprint Book