HTTP Error 500.19 - Internal Server Error when hosting on IIS

Question

I host my ASP.NET application on IIS Express 10.0 for remote access. It says :

"The requested page cannot be accessed because the related configuration data for the page is invalid." and "Cannot read configuration file due to insufficient permissions."

I attached Screenshot below :

Answer 1

Try to determine the identity of the worker process and grant read permission for the solution folder.