We are migrating a client from SBS 2008 to a standalone Exchange 2007 server. We have turned off the Exchange services (System Attendant, Transport, and Info Store) from the services console on the SBS server. After doing this a handful of users have experienced the dreaded credential prompt in Outlook. It occurs every time they open Outlook.
It only seems to be happening to users that have Outlook Anywhere configured in Outlook. Now, I know Outlook Anywhere will prompt for credentials if you are not on the LAN, but the users are on the LAN and it's still prompting. Clients are running both Outlook 2010 and Outlook 2013.
If we turn the exchange services back on from the SBS server, then the problem goes away. Any ideas?