In this case your global address book will update each time Send/Receive is pressed. There are a lot of resources to help you become familiar with Office 365.
Check out Microsoft's FAQs for Office 365 (https://support.office.com/).
There is easily enough technology to solve this problem but it is often ignored.
/Microsoft Exchange System objects/OAB version 2″ is invalid and couldn’t be updated.” This warning occurs in my situation way after the migration of exchange 2007 to exchange 2013.
I might have a problem with my Offline Address Book in Outlook.
This blog dives into topics related to Unified Contact Management for smartphones in the enterprise.Please use the steps below to update your Global Address Book.In order for some GAL entries to show up properly you may need to turn off Cached Exchange Mode.It addresses business continuity, emergency preparedness, DR, productivity, and employee reachability.Closely integrated with Microsoft Exchange Server and Outlook, the blog will be of interest to IT administrators, architects and managers with hundreds or thousands of smartphones.