Oab not updating cached mode
If using Outlook, query the GAL directly, or download the latest OAB. Before you do anything send the user you created a 'Test Email' from your own account.
The Outlook Client failed to download an updated copy of the Offline Address Book because the services have stopped functioning.
When changes occur within the main Global Address Book (GAL) on the Exchange server, computers running Outlook 2007, 2010, and 2013 may not automatically receive the updates.
To get the OAM to immediately generate run the following command: Update-Offline Addressbook “name of offline address book”.
You may encounter an issue stating that the System Attendant Service is not running or you do not have permission. Make sure you are running the Exchange Management Shell as Administrator and 2. *note* The Service is named “Microsoft Exchange System Attendant”.
If this is happening, then you may notice missing, non-existent and/or incorrect entries.
24/02/13If you create a new user, give them a mailbox, and they seemingly fail to appear then don’t panic! If you receive an error message then you can investigate further (Note: Set your Outlook client to send you a delivery report on the test email as well).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! 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.