When changes occur within the main (Global Address Book) on the Exchange server; computers running Outlook 2007 and 2010 may not automatically receive the updates. When this happens you may be missing new entries, see non-existent entries, or notice incorrect entries. Updating your address book synchronizes the cached Address Book with the Global address book, and may fix instances of mail that is bounced back to the sender.
Note: 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 and Outlook 2010).
Outlook 2007
Outlook 2010
Outlook 2013
Note: Please make sure cached mode is turned on.- Select the Send/Receive tab on the Ribbon.
- Click Send/Receive Groups and then click Download Address Book.
- Click OK.