We recently upgraded from SBS2011 to 2008R2 and Exchange 2010. After changing Exchange over to the new server and changing the server name in Outlook 2010 each internal user gets asked for there password when going into Outlook. They enter it and everything is fine for the rest of the day.
I have tried deleting the account from credentials but that made no difference. Also I have remade the profile.
If I login to another PC as that user the same thing happens (there are no roaming profiles)
Any help would be appreciated