SymptomsEnd users click the Log Off button in the Forefront UAG portal and are logged out of the portal, but an event 165 appears in the event viewer or in the Web Monitor with the description "ADFSv2Site: Single sign out process for user with lead user claim value [user_name] was not complete. Session ID: [session_ID], Trunk name: [trunk_name]."

CauseAn unknown error occurred when the user attempted to sign out. This error can be caused due to delays on your network, or because the AD FS 2.0 server is not responding.

SolutionYou should check your network connections and the status of your AD FS 2.0 server and your partner's AD FS 2.0 server; in particular make sure that the AD FS 2.0 Windows Service is started on the AD FS 2.0 server.