I might have a problem with my Offline Address Book in Outlook.For me, new colleagues are not showing up and the contact pictures aren’t displaying either.Firstly and fore mostly: If you do anything in Exchange: Apply the “cup of coffee rule”, never make a change then go and prove that change works straight away! However most of us work in the real world and you have a user who needs to use this mailbox yesterday! Remember, if you are looking at the Global Address List in Outlook then you are NOT looking at the Servers Global Address List*. Then check the mailbox Exists (See Check for existence of mailbox sections below).1. The Mailbox SHOULD be in the right hand window (Providing you are in the correct administrative group, on the correct server, and in the correct mailbox store! Remember with Exchange 2007 / 2010 you create the mailbox with the Exchange system Manager anyway! On the Exchange Server, Start Ensure “Hide From Exchange Address Lists” is NOT ticked.In Cached Exchange Mode, Outlook 2007 & 2010 downloads a local copy of the Global Address List (GAL), but only updates it every 24 hours.In order to reflect any changes or updates made to the Global Address List, you can force Outlook to download a new copy of the GAL.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.
This is called the Offline Address Book and is being generated on the Exchange server.
Support for Outlook 2000 was dropped with Exchange 2007, Exchange 2010 only supports Outlook 2003 (post SP2). In the diagram below you can see this server is performing public folder AND web based distribution, this is probably because you ticked this box when you installed the product.
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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.
When changes occur within the main Global Address Book (GAL) on the Office 365, computers running Outlook 20/2016 may not automatically receive the updates.