Unable to start debugging on the web server. The debugger cannot connect to the remote computer in MVC

Check all the steps outlined here: https://msdn.microsoft.com/en-us/library/dwesw3ee.aspx?f=255&MSPPError=-2147217396

If you're using a hosts file, make sure you have an entry for the site in question. That was the problem for me, when I encountered this message.