Routing HTTP Error 404.0 0x80070002

Question

I have created routing rules in my ASP.NET application and on my Dev machine at IIS7 everything works fine. When I deploy solution to prod server which has also IIS7 I get e

Answer 1

The problem for me was a new server that System.Web.Routing was of version 3.5 while web.config requested version 4.0.0.0. The resolution was

%WINDIR%\Framework\v4.0.30319\aspnet_regiis -i

%WINDIR%\Framework64\v4.0.30319\aspnet_regiis -i