The communication object, System.ServiceModel.Channels.ServiceChannel, cannot be used for communication

Question

The communication object, System.ServiceModel.Channels.ServiceChannel, cannot be used for communication because it is in the Faulted state.

Answer 1

As a matter of fact, if unsuccessful after following suggestions by marc_s, please keep in mind that a element in server binding configuration (or lack thereof) in web.config on the server may cause this exception. For instance the server is expecting Message-level security and client is configured to None (or, if the server is not part of an Active Directory domain but the remote client host is).

Tip: In such cases the client app will most likely invoke the web service fine when executed directly on the server machine under administrative account in RDP session.