Cannot find .cs files for debugging .NET source code

Question

I tried setting up debugging the .NET source by following this MDSN walkthrough. The Symbol cache is setup properly, as is the check \'Enable .NET Framework source stepping\

Answer 1

I've tried all the answers from above and nothing worked.

This solved it for me:

Debug -> Delete all Breakpoints

and it solved the problem! So many different things causing this issue.