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c#wcfmsmq

Error : Message Queuing failed to verify digital signature of a message sent to queue

I am sending messages from a client machine to WFC service hosted in IIS on a remote machine, using net.msmq protocol.The queue is set as one way in WCF. The queue has authentication enable.

The client can send messages successfully but they end in the Dead-lettler messages. Inspecting the message using mmc, the sender is not authenticated (check tab sender, of message properties).

The message

Message Queuing failed to verify digital signature of a message sent to queue

appears on eventlog after 600 seconds.

Solution

  • Find out the problem is that the sender is using a weak certificate algorithm.

    To allow weak certificate algorithm i added this key to registry on the server machine:

    HKLM\SOFTWARE\Microsoft\MSMQ\Parameters\Security\WeakHashAlgorithms

    and restart MSMQ service.

    Reference: https://technet.microsoft.com/en-us/library/cc773571(v=ws.10).aspx