Failed to successfully launch or connect to a child MSBuild.exe process. Verify that the MSBuild.exe

Question

First time this happens to me.

Ran the build and got this error.

When I rebuild other sln all works fine.

Error 1 The build

Answer 1

If you have tried everything in this post (restart, reboot, etc.) and nothing helps. Try Running VS2012 as Administrator and see if that helps.