Alrighty, I am stumped. Only one of our users is having this issue. She logs into the domain just fine, but when she opens Outlook it is requiring her credentials again. Once she types it in, she works with no problem; she has to do this each time she opens Outlook though. Machine: XP SP1 (all patches EXCEPT SP2 on it though) Outlook: 2002 Domain: Recently added a W2K3 DC, all other DCs W2K Thanks!