ContractFilter mismatch at the EndpointDispatcher exception

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A “ContractFilter mismatch at the EndpointDispatcher” means the receiver could not process the message because it did not match any of the contracts the receiver has configured for the endpoint which received the message.

This can be because:

  • You have different contracts between client and sender.
  • You’re using a different binding between client and sender.
  • The message security settings are not consistent between client and sender.

Have at look at the EndpointDispatcher class for more information on the subject.

So:

Make certain that your client and server contracts match.

  • If you’ve generated your client from a WSDL, is the WSDL up-to-date?
  • If you’ve made a recent change to the contract, have you deployed the right version of both client and server?
  • If you’ve hand-crafted your client contract classes, make sure the namespaces, elements names and action names match the ones expected by the server.

Check the bindings are the same between client and server.

  • If you’re using a .config file to manage your endpoints, make sure the binding elements match.

Check the security settings are the same between client and server.

  • If you’re using a .config file to manage your endpoints, make sure the security elements match.

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