I\'m having this error trying to debug my ASP.NET MVC app. I\'ve set the app to \"Use Local IIS Web server\", and selected ASP.NET as the debugger. Running the site without debu
Sounds like you are trying to develop on IIS and not iis express or development server. If you are using asp.net mvc 4, make sure that the Application Pool is framework 4. If not just make sure that your app pool it matches your asp.net mvc version.