Use the Get-OfflineAddressBook cmdlet to view offline address books (OABs). In Exchange Online, this cmdlet is available only in the Address Lists role, and by. A3: The offline address book is a snapshot of the Active Directory directory service information that is available in the global address list. This behavior may occur if multiple address lists are included as part of the Offline Address Book (OAB) generation on the server that is running Microsoft Exchange Server. To resolve this issue, set the GAL as the only address list for which an OAB is generated on the Exchange.
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An offline address book (OAB) in Exchange Server allows Outlook users in cached Exchange mode to access address list and global address. Admins can learn how to assign offline address books (OABs) to mailboxes in You can also assign the OAB to a filtered list of mailboxes. Choose which information from the Exchange Server Global Address List is downloaded and available for offline use in Outlook
Use the Exchange Management Shell to create offline address books If you've created multiple address lists, you can use OABs to make the address lists available to users when they're offline.
How do you know this worked? To add address lists to the OAB, specify the current address lists plus the ones you want to add.
To remove address lists from the OAB, specify the current address lists minus the ones you want to remove. You can configure multiple OABs to use the same organization mailbox, but you can't configure an OAB to use more than one organization mailbox.
For more information, see the Use the Exchange Management Shell to enable shadow distribution for offline address books section in this topic. Use the Exchange Management Shell to configure any virtual directory in the organization to accept download requests for the OAB The Client Access frontend services on any Mailbox server can proxy the OAB download request to the correct location. To create organization mailboxes, see the Use the Exchange Management Shell to create organization mailboxes section in this topic.
If you don't want to wait, you can use the procedures in this topic to immediately update an OAB. You can have an organization mailbox in each site, and you can configure shadow distribution for an OAB so a read only copy of the OAB is stored in all organization mailboxes.
For more information, see Use the Exchange Management Shell to enable shadow distribution for offline address books.
You need to be assigned permissions before you can perform this procedure or procedures. To see what permissions you need, see the "Recipient Provisioning Permissions" section in the Recipients Permissions topic.
By default, no OAB is assigned to a mailbox database. To see what permissions you need, see the "Mailbox databases" entry in the Recipients Permissions topic. The following factors can affect the size of the offline address book:. The usage of security certificates in your organization. They are the single largest contributor to the size of the offline address book.
The information that your organization has added to Windows Server Active Directory Domain Services for each user and each distribution group. For example, some organizations populate the address properties for each user. Outlook has the following safeguards to help protect your organization's network from too many offline address book downloads:.
In the default configuration, only one full offline address book download attempt is made in a hour period. Each time when a server response is received and the download starts is counted as a download attempt.
If a differential update fails, another attempt is made after one hour. Expand your Office skills. Get new features first. Was this information helpful?
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