TFS Error: “Source Control - Unable to Access Database”

Question

I am currently using TFS with Visual Studio 2010 Ultimate and getting this error when I try to open up my solution:

The associated source control plug-in is no

Answer 1

For anyone still having this problem. I tried everything in this thread and nothing seemed to work. Then I found this solution by Patrick B Cahill on MSDN:

"As soon as I installed both TFS 2010 Service Pack 1 and Visual Studio 2010 SP1 Team Foundation Server Compatibility GDR respectively and rebooted, the builds started working."

This solution fixed all of my problems.