Oab not updating exchange 2016 server
Note: If you're using Cached Exchange Mode, we recommend that you download the full details of the offline address book.This reduces the number of times the Outlook window might become unresponsive and the number of unnecessary connections to the Microsoft Windows Server Active Directory.This is some times required in case your OAB generation/download is not properly working.There are two methods available in server side to generate new Offline Address Book 1.Note that if you are having multiple outlook profiles, you may see multiple GUIDs in the folder.You may see the following file structure with in the GUID corresponding to the outlook profile in consideration.In Exchange 2013, OAB files are not stored locally on the CAS.
The disadvantage with this approach was that only one server was configured for OAB generation, and it was a single point of failure.
In Exchange 2013, the OAB is generated by each Exchange 2013 Mailbox server(s) that hosts a special type of arbitration mailbox, called organization mailbox.
The unbinding of OAB from a specific server allows the same OAB to be generated by multiple Mailbox servers.
This reduces network traffic and improves performance.
The offline address book is a snapshot of information from the Global Address List (GAL).