title: Why can't my netmsmqbinding can't do twoway binding?
body: <p>I'm using WCF and netmsmqbinding and I am getting the following error message:</p>
  
  <blockquote>
    <p>Contract requires TwoWay (either request-reply or duplex), but Binding 'NetMsmqBinding' doesn't support it or isn't configured properly to support it. Why?</p>
  </blockquote>
  
  <p>My environment is window 2003 server.  The wcf servcie is hosting as a window service. Thank you in advance for your help. </p>