VS2010 error: Unable to start debugging on the web server

Question

I get error message \"Unable to start debugging on the web server\" in Visual Studio 2010. I clicked the Help button and followed the related suggestions without success.

Answer 1

I've had the same issue and in my case it happened because the AppPool identity was set to impersonate an AD user which had its password changed. Therefore the process could not start and the AppPool always stopped when trying to debug from VS.

After updating the password in the AppPool/Advanced Settings/Identity everything started running smoothly.