When that control is set to "More columns" instead it causes the contents of the list to be blank until a search is performed.
We had some of Outlook clients running a patch that was blocking access to autodiscover and in turn would not allow the users to get the OAB.You may encounter an issue stating that the System Attendant Service is not running or you do not have permission. Make sure you are running the Exchange Management Shell as Administrator and 2. *note* The Service is named “Microsoft Exchange System Attendant”.The Outlook Client failed to download an updated copy of the Offline Address Book because the services have stopped functioning.Quite often all Administrators, even Exchange Administrators simply refer to the users they see in the Address section of Outlook casually as the GAL for ease of reference, but really more often than not, you are looking at the OAB.However sometimes in large complex organisations we have a situation where a new joiner joins and their colleagues want to email them immediately, but they don’t appear in Outlook for them so they call the Helpdesk “Why isn’t Joe Bloggs in the GAL??
The GAL looks fine on my computer, but when I log into the problem PC, the GAL on that PC is empty.