We have several users that are having credential problems with OWA. If you open internet explorer and type in "server/exchange", it will normally pass the users credentials and open OWA. On a few of our users it will instead open up an authentication box. The thing is, when the box comes up it has the wrong username listed as in: domain\john when it really belongs to say Nancy. It is not tied to the pc, when i log in and try it everything works fine. If the user moves to another computer the problem follows them. Hopefully someone has seen this problem, and I have put enough info in this question.