Prior to raising the functional level OWA worked with users logging in using domain\username. Now the login box prompts the user repeatedly. Users can send and receive messages but are prompted to enter username and password every few seconds. The functional level was at 2000 mixed. I raised it to 2003 native two weeks ago. other items to note: window updates were also applied that day. I also have a reciently installed Go Daddy certificate on the OWA site. What do I have to change to allow owa to authenticate with one prompt?