HTTP error 500.19 - Cannot read configuration file

Question

In one of my ASP.NET apps, all of a sudden I am unable to run it in Visual Studio 2013 due to the error displayed below. It appears that it is trying to open the web.config from

Answer 1

In my case, the project was located on network not my local disk. After copying the project to local, the issue was resolved. Hope it can save someones time who has the same issue.