Outlook 2016 global address list not updating cached mode
Step 3: The new version of the GAL will now be downloaded.
Therefore, if you are in Cached Exchange Mode and if you are working online — that is, your connection status is Connected to Microsoft Exchange — Outlook uses both the offline address book and the GAL to provide a complete listing of user information.
If you are in Cached Exchange Mode and your connection status is Disconnected, Trying to Connect, or Offline, you can see only the information that is in the offline address book.
This feature requires you to use a Microsoft Exchange Server 2000, Exchange Server 2003, or Exchange Server 2007 account in Cached Exchange Mode.
Most home and personal accounts do not use Microsoft Exchange.
In order for some GAL entries to show up properly you may need to turn off Cached Exchange Mode.
Please visit the document on How to turn on or off Cached Exchange Mode for (Outlook 2007, Outlook 2010, and Outlook 2013).
–For Instructions for Outlook 2007 –For Instructions for Outlook 2011 –For Common errors and troubleshooting Step 2: Uncheck the box next to Download changes since last Send/Receive.
In the Information to download section, select Full Details and in the Address Book section, choose \Global Address List. **NOTE** Please read this section carefully, or your update will not work!!
Therefore, not all the information in the GAL is available in the offline address book.