Throwing an exception in a WCF service throws a CommunicationException

Question

Whenever I throw an exception in my service, another exception is thrown right after it:

System.ServiceModel.CommunicationException: There was an error reading from the
pipe: Unrecognized error 109 (0x6d). ---> System.IO.PipeException: There was an
error reading from the pipe: Unrecognized error 109 (0x6d).

I'm implementing IErrorHandler so I can log (using log4net) all unhandled exceptions:

 bool IErrorHandler.HandleError(Exception error)
 {
  if (!(error is FaultException))
  {
   logger.Fatal("Unhandled Exception", error);
  }
  return false;
 }

Any idea why is that?

Answer 1

Try to enable tracing why you have a communication error. How to enable this: check this site: link text

Answer 2

Problem was client calling Abort on the channel whenever I returned a fault exception.