The version of clr.dll in the target does not match the one mscordacwks.dll was built for

Question

I am working in an ASP.NET MVC 3 application using the .NET framework 4.0. When I go to debug my application, i get the message:

\"Unable to attach to application \'webd

Answer 1

Just had this issue and simply restarting Visual Studio fixed it for me.