mscorlib version conflict during build

Question

On a new Win8.1 reinstall, with all of my code restored from backup, I\'m suddenly now getting a Visual Studio warning when I build the main project of my solution:

Answer 1

I have been able to fix this issue by deleting my ".suo" file of my solution and then re-opening the solution. I then rebuild the solution and the issue is gone.

The ".suo" file is within the ".vs" folder which is what I usually delete.

Good luck!