When I debugging in VS2013 update3, msvsmon.exe crashed when hit at a breakpoint.
It shows \"The debugger\'s worker process (msvsmon.exe) unexpectedly exited. Debugging
I've just had the problem in VS 2015. I hadn't noticed that one of my breakpoints was bogus - I had inadvertently pressed F9 to set a breakpoint when the disassembly window was showing in the previous debugging session. The solution was simply to delete that one bogus breakpoint - I got to keep all my others.