How to restore a disconnected mailbox in Office 365 Dedicated/ITAR (vNext)


In Microsoft Office 365 Dedicated/ITAR, you want to restore (merge) a disconnected (inactive) mailbox to an active mailbox.

Note Restoration can't occur between active mailboxes.

More Information

This section outlines the permissions that are required and the process to recover deleted items for Legacy Dedicated and vNext customers.

Permissions required

Legacy Dedicated

See the applicable self-service guide at Office 365 Dedicated Release Collateral.


To complete this task, the Discovery Management role group is required.

Screen shot of the Organization Management permission

For more information, see the following TechNet topics:

Process steps

Legacy Dedicated

Note This feature is not available in ANSI-D Exchange 2013. Contact Microsoft for more information.

For information about how to locate a disconnected mailbox, see You can't complete a mailbox restore in Office 365 dedicated/ITAR . To restore the content of a mailbox, see the details in New-MailboxRestoreRequest.


For step-by-step instructions to find and restore the content from a deleted (Inactive) mailbox, see Restore an inactive mailbox in Exchange Online.

Article ID: 3140271 - Last Review: Aug 24, 2016 - Revision: 1