Outlook 2007 prompting for credentials of former hosted Exchange provider
Hello All, here's my situation. I'll explain from the top, better TMI than NEI.
I have a client that switched hosted Exchange providers a few months ago, moved from 1and1 to AppRiver. Everything is fine except every 20 mins or so they get an Outlook pop up looking for exchange.1and1.com credentials. This is a global issue and isn't just happening to one user.
Stuff I've tried: uninstall/reinstall Outlook by doing a "change install" from add/remove (yes it's an XP box). No help from that, still get the 1and1 nag. What did work is creating a whole new domain profile for the user and setting up a new Outlook profile, everything is fine when I do that so it would seem that the issue doesn't involve MX record or autodiscover problem etc. The user doesn't want to work off a new domain account so here I am.
Sorry if this is TMI but the user only uses their local desktop when there's an issue with the cloud server. It's only at that time that they call upon their local Outlook 2007 setup to continue being productive and that's when they see the 1and1 nag. When all systems are go the user remotes into their cloud terminal server where Outlook 2010 profile resides and there's no nag for 1and1 up there, the problem only exists on the users local Outlook 2007 setups.
So, I'm thinking there may be a file somewhere in the Outlook setup files that needs to be deleted in order for the nag to stop. One other thing I tried was scanning the registry for "1and1" entries, I found a few but they didn't look like pointers so I didn't disturb anything.