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.

Answer 2

Quitting and re-opening Visual Studio solved it for me.

Answer 3

Just had the same issue this morning. This error usually appears when your system is running low on memory. If quitting and re-opening VS doesn't do the trick, try closing some of the other applications that are currently running. If all else fails try restarting your system.

http://blogs.msdn.com/b/paraswadehra/archive/2014/01/04/the-build-stopped-unexpectedly-because-of-an-internal-failure.aspx