WCF: The request for security token could not be satisfied because authentication failed

Question

I have written a very simple WCF Service that sends and receives messages. I have tested the app through the VS 2008 default web server host and everything works fine. But w

Answer 1

Be sure to set this bindingConfiguration (specifying security mode 'none') on both client and server or else you will get this message - which is quite a red herring as far as debugging the problem.

The message could not be processed. This is most likely because the action 'http://tempuri.org/IInterfaceName/OperationName' is incorrect or because the message contains an invalid or expired security context token or because there is a mismatch between bindings. The security context token would be invalid if the service aborted the channel due to inactivity. To prevent the service from aborting idle sessions prematurely increase the Receive timeout on the service endpoint's binding.