When your WCF service returns you the error “The type ‘MyNamespace.MyService’, provided as the Service attribute value in the ServiceHost directive, or provided in the configuration element system.serviceModel/serviceHostingEnvironment/serviceActivations could not be found.” The common culprit will inside the .svc file, you just double check the Code behind file or DLL are deployed in the bin folder. But one rarely known cause is that your WCF service can’t be activated due to missing dependency, which in my case today I realize I didn’t deploy the Sync Framework. So beware, WCF errors can be quite cryptic sometimes.