This article shows how to manually update the Global Address List (GAL) in Outlook (version 2010 and above).The Global Address List is a directory of contact information that is stored in a central place called the Exchange Server.
When the value is set to 0, Outlook will use 16 to prevent a “divide by 0” error.
If the key name doesn’t exist, Outlook uses a value of 8.
Note for Mac Users: Mac versions of Outlook do not connect to the Exchange server in the same way as PC versions.
Every time a Mac checks for new mail, it also updates the GAL.
This morning I was asked to update the Global Address List and Offline Address Book in an Exchange environment.
You could wait for Exchange to do it automatically (the default schedule is once a day) but what when you want to force the update to take place right now?
You’ll find the following 6 oab-files in this location which make up the full Offline Address Book: If you are still using Outlook 2002/XP or previous, the file names won’t have a “u” in front of their name.
You’ll have to rename them all to or, in the case of Outlook 2010 or Outlook 2013, rename the folder containing the oab-files to to reset the local Offline Address Book.
The command for the manual update procedure can be found here: Outlook will automatically download updates only unless the size of the changes is larger than 12.5% (one-eighth) of the total OAB size.
In that case the whole OAB is being downloaded again.
Therefore, there is no need for equivalent instructions for the Mac operating system.