We are on Exchange 2007 environment, we have multiple CAS servers and for some reason some of the users are getting prompted to enter password over and over. Has anyone seen this issue. thanks alan

see if this applies to your situation http://technet.microsoft.com/en-us/library/cc411324(EXCHG.80).aspx

If the issue persists, please also try the suggestions from the link below: http://support.microsoft.com/kb/927612 Thanks. Novak Wu Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.