I got a problem migrating from VS.Net 2008 / MVC 1 to VS.NET 2010 (+C# 4.0) / MVC 2
The web.confi
Ok I got y answer (thanks to a colleague)
When migrating from ASP.Net 2.0 to ASP.Net4.0, if you meet the same problem, then check in Web Service Extension if ASP.Net v4 is Allowed.
In my case, after installing the .Net framework 4, it was prohibited.
Will & Mark : thanks for your help, hope it will helps others.