msvsmon.exe crashed when debugging

Question

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

Answer 1

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.

Answer 2

Fixed by changing Options->Projects and Solutions->Web Projects -> Use 64bit version of IIS......... to False.

Answer 3

This error occured to me, when I tried to debug with Visual Studio / Service Pack 3, when Service Pack 4 was already released. After updating to the Service Pack 4 I was able to debug.

So, try installing the newest version of Visual Studio

Regards

Answer 4

I started getting this exact error today in my VS2019 project. Attempting to expand/inspect simple data structs in VS debugger would make it freeze for a minute and then I'd get that "The debugger's worker process (msvsmon.exe) unexpectedly exited. Debugging will be aborted" message:

If I add msvsmon.exe process to windows defender exclusions list, then the problem disappears.

Answer 5

I had this error also, and I too have Astrill installed. Completely uninstalling Astrill fixed the issue.

I reached out to Astrill support, and they answered (within 2 hours) saying the correct fix is to hold Ctrl and press the "Help" button on the Astrill application, and then choose "Uninstall LSP". This has fixed the issue without needing to un-install Astrill.

I don't know what LSP is, but I presume it's some sort of proxy.

Answer 6

I just experience this with VC2017 Community Edition 15.7.2. Turning off the Microsoft Symbol Server lookup while debugging fixed it for me.