We added an Exchange 2010 server a few months back and moved mailboxes over from our 2003 server. After that was complete, I took the Exchange 2003 server offline.
Since then, all of our 2007 Outlook clients running in cached mode prompts the user for their username and password. You can enter it but it will prompt you again shortly after. This didn't start until the old exchange server was shut down.
As a fix, I can remove the outlook profile and re-create without cached mode and all is well. But the moment I turn on cache mode, the username/password prompts starts up again.
There are tons of posts with similar situations, but not with a demoted 2003 exchange server. Any advice is much appreciated!
-jbrittain