msvsmon.exe crashed when debugging

Deleting all of the breakpoints solves the problem when I hit this error. Disabling the breakpoints was not enough - they had to be deleted.

I was able to attach to a process numerous times. Once I added a conditional breakpoint (with a few checks), I started getting this error when attempting to attach to that same process.

The error provided in the question is one problem. I also received an error stating that a debugger was already attached when I tried again. Either way, deleting breakpoints solved it.

Try turning on Options > Debugging > General > "Use Managed Compatibility Mode"

I got this error/crash too while debugging and trying to inspect a variable with 50 MB of text data in it. This option worked in both VS2013 and in VS2015 to allow me to debug and inspect the variable with large data.

A couple of things that worked for me:

• Try Closing VStudio and relaunching.
• If not, reboot helps.[I know thats generic, but its worth a shot]
• Disable unnecessary break points.