Outlook 2016 offline address book not updating cached mode
5)Like with Exchange Web Services, Autodiscover will provide the Offline Address Book URL.
This request will then be proxies to OABGEN mailbox which had the OAB information and this information is served back to the client.
You are unable to see his information in your address book.
In other words, your PC or device does not store any GAL information locally.The Global Address List is a directory of contact information that is stored in a central place called the Exchange Server.As a faculty/staff member, your Outlook program automatically syncs with the Exchange server on a regular basis. For example, say a new person joins your workgroup.Offline address book is used by Office Outlook so that users can locate contact information even when they are not connected to the server.Offline address book works when the Outlook client is configured in cache mode or when it is in offline mode.
By default, an offline address book is created by Exchange server and includes all the GAL (Global Address Lists).