WCF Service Error: The HTTP request is unauthorized with client authentication scheme ‘Anonymous’. The authentication header received from the server was ‘Negotiate,NTLM’

For the third time, I run into this problem again… For me the decision to create a blogpost for this problem, so I can refresh my memory again in the future :) Current situation We’ve created a WinForms application. This application calls a WCF service for some project specific information. When I’m running the application on my domain account, everything works fine. I hit the button for a new window, the service call is made and the project appears nice and smooth in the listview. After I did a deploy to the testserver, I’m trying the run the same application, and suddenly the window crashes and come up with the message: “The HTTP request is unauthorized with client authentication scheme ‘Anonymous’. The authentication header receiv... [More]