Tests are no longer executed through Visual Studio 2010 after Visual Studio 11 beta was installed

Question

I have created many TestProjects with Visual-Studio-2010 Ultimate. All tests were executed successfully (they were simple unit tests). Now I installed Vis

Answer 1

Have you checked this: MSTest not working after installing vs11 next to vs10

To paraphrase the official answer from Microsoft in the above link:

This is a known issue with Visual Studio 2010 which got fixed in 2010 SP1

Get SP1 from here.

Answer 2

I think this because the lack of SP1 of TFS 2010