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Mike Hammett's avatar
Mike Hammett
Copper Contributor
Apr 22, 2021

Shared Mailbox Recovery

I have engaged our reseller via support ticket, but they haven't been overly useful. I cannot find the ability to enter a ticket directly to Microsoft via either my Office 365 admin portal or the Partner Center.

About a week ago, Microsoft lost a bunch of our Shared Mailboxes. I’m trying to figure out how to get them back, but it’s a long, undocumented road.

 

I found the real -> shared mailboxes with `Get-Mailbox -SoftDeletedMailbox`, but not the boxes that were originally created as shared.

 

I was able to restore the ones I did find via `Undo-SoftDeletedMailbox mailto:allieb@contoso.com` but that doesn't work for the other boxes. It also doesn't seem to actually produce a usable mailbox.

 

They do not appear in active or deleted mailboxes.

 

Not all shared mailboxes disappeared, just some of them.

 

For one of the mailboxes, a message trace shows mail coming in until some time on the 12th. The admin audit log shows no activity on the 12th.

4 Replies

  • Hi MIke,

    To get support from Microsoft you can go in the M365 admin portal to the support menu - New service request
    On the right a menu slides out
    Type you issue in the search bar followed by enter
    at the bottom of the menu you have the option to contact support

    Hope this helps

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