WCF Error - Security processor was unable to find a security header in the message

c# wcf .net-3.5 wcf-security
user363348 picture user363348 · Jun 10, 2010 · Viewed 13.1k times · Source

I'm getting what appears now to be a security error in my WCF Service. Originally my error was about a falted state(removed using around client proxy to clear this error), but have found more information through enabling trace.

I have been unable to get my solution running after encountering this error, and even my backup copy now gets the same error. I'm not sure what has caused this to happen, I undone the changes I made (nothing relating to WCF) and still get the same error.

The error from trace is - System.ServiceModel.Security.MessageSecurityException: Security processor was unable to find a security header in the message. This might be because the message is an unsecured fault or because there is a binding mismatch between the communicating parties. This can occur if the service is configured for security and the client is not using security.

I'm not really sure what I need to do to fix this, any help would be usefull. The application was previously working.

Answer

miles ercolani picture miles ercolani · May 31, 2012

Despite the binding mismatch you can force WCF to work by setting the

Security
enableUnsecuredResponse="true"

Below is more of a code sample that you can use to compare against your own settings...

<security enableUnsecuredResponse="true"
          authenticationMode="MutualCertificateDuplex"
          defaultAlgorithmSuite="TripleDesRsa15"
          includeTimestamp="false"
          messageSecurityVersion="Default" >
  <issuedTokenParameters defaultMessageSecurityVersion="Default">
    <issuer address="" binding="" bindingConfiguration="">
      <identity>
        <certificateReference storeLocation="CurrentUser"
                              x509FindType="FindBySerialNumber"
                              findValue="0b 8d a9 18 59 65 36 b9 de 65 8b 21 ba 6c ab cc"
                              isChainIncluded="true" />
      </identity>
    </issuer>
  </issuedTokenParameters>
</security>

Related questions

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

I have two WCF services on the same machine. One is the publisher and one is the listener. The Publisher is dynamically creating proxies based upon and endpoint. I am configuring the proxy in code like this: WSHttpBinding binding = new …

Read More
Collection was modified; enumeration operation may not execute

I can't get to the bottom of this error, because when the debugger is attached, it does not seem to occur. Collection was modified; enumeration operation may not execute Below is the code. This is a WCF server in a …

Read More
No connection could be made because the target machine actively refused it 127.0.0.1:3446

I'm using the WCF4.0 template -REST. I'm trying to make a method that uploads a file using a stream. The problem always occur at Stream serverStream = request.GetRequestStream(); Class for streaming: namespace LogicClass { public class StreamClass : IStreamClass { public bool UploadFile(…

Read More