asp.net web-config error

Question

I have still problem with asp.net project. In Visual studio when i start debug it is all good and page working but, when i try it on iis7 showse this error.

SHOW ERROR:

Answer 1

Change your application pool to be compatible with .NET 4.0.

Open IIS then click on an application pool on the list and modify it to use .NET Framework 4.0.

Answer 2

Change the .NET version on the Application pool for your website. It must be .NET 4.0, not the .NET 2.0 View a List of Application Pools (IIS 7)

Answer 3

Ensure the application pool is set to use .NET 4.0.