Updating the global address list
How It Works: On a scheduled basis, Epicenter Server synchronizes a copy of the GAL to a contacts folder in each user's mailbox. During installation, you configure Epicenter Server by telling it which address book to distribute, who should receive the address book, and how often to send updates.
Then Active Sync synchronizes those changes to each user's device. The address book could be your Exchange GAL, an Exchange address list, or an Exchange Public Folder.
This is the master list of all the Exchange 2007 objects, and the operating system won't let you mess with it.
Fortunately, there is a well respected work-around, create a new Global Address List, and then 'update' the mailbox. Here is a free tool to monitor your Exchange Server.
None of these were the fix for my issue and I’ll explain my resolution in detail later in this article.
There is a similar fix included in the 2013 February CU, KB2798145, however this was applied and did not resolve the issue.
Remember when I said none of these were the fix to my issue?
This means that address book entries saved by users rapidly become out of date.As of this writing it seems the information closest to the user takes the highest priority.A local Outlook Contact will override the local Lync Address Book.The local Lync Address Book will override information kept in the Lync Address Book Services Web Query (ABS-WQ).During the course of resolving a Lync address book issue for Lync Server 2013 “CU2″ I gathered a list of common issues that can occur during the address book generation process.