Today, I would like to talk about the Exchange 2010 Offline Address Book (OAB). By default Exchange 2010 installs will have all versions of the OAB client support enabled. Version 2 supports Outlook 98 SP1 and earlier clients. Version 3 supports Outlook 98 SP2, all Outlook 2010, and Outlook 2003 SP1. Version 4, which is […]