IN VS 2008 i can run .svc but on production IIS 7 i can\'t. I get this error. i am using x64 win.
I run
C:\\Windows\\Microsoft.NET\\Framework\\v2.5.0.303
I had to manually add handler mappings for svc NET 4.0. Somehow they have dissapeared from list of IIS mappings.
I got the idea HERE.