ASP.NET IIS 7.5 HTTP 500.21 error

Question

I am having an issue setting up a local site.

The project is using ASP.NET Framework 4.0 and I have my DefaultAppPool to use 4.0 with Managed Pipeline Mode as Integrated

Answer 1

You must register IIS to framework 4 to execute it correctly. You must follow the start menu as given below to get VS(installed version) command prompt Start->All Programs -> Microsoft Visual Studio (installed version)->Visual Studio Tools -> Visual Studio Command Prompt(installed version)

For details try below link : https://forums.asp.net/t/1587832.aspx?Problem+with+ExecuteRequestHandler+in+iis7