-Create new OAB on generating server
-Navigate to C:Program FilesMicrosoftExchange ServerExchangeOAB and ensure there is a folder there -You may have to restart the Microsoft Exchange System Attendant service
-Go to Organization Configuration/Mailbox and Offline Address Book tab, make sure you are doing Web-Based distribution
-Navigate to your distribution servers to C:Program FilesMicrosoftExchange ServerClientAccessOAB and make sure the folder is there as well.  If it is not, restart the Microsoft Exchange File Distribution service and wait a bit.
-Go into IIS on the distribution servers, Application Pools, Recycle MSExchangeAutodiscoverAppPool
-In Outlook do an Test E-mail AutoConfiguration and ensure the OAB UID matches the folder name in the above directories