I have Exchange 2010 installed on Server 2008 R2 which has worked with no issues for last 4-5 months. About a week ago the Outlook clients began asking for a password when trying to connect to Exchange server. These clients are all on domain and have never had issues in the past. We do have Outlook Anywhere configured and remote users utilize this feature quite often, the password prompt is normal and not the complaint. If a desktop located in our office logs in and authenticates, why is it asking when opening Outlook. Now we did notice that this began after going through this article below and running the commands on our server. We're just not sure WHY its affected it or how to change it back if it was the cause. All clients are either using Outlook 2007 or 2010.
Note: The reason for running these commands was in an attempt to resolve an issue with the FREE BUSY SCHEDULING.