Forum Discussion
Shared mailbox disappeared from Exchange Online (still showing On Prem)
We run Hybrid and when someone leaves the company, their user mailbox is converted into a shared mailbox. I've had it happen twice now where the shared mailbox disappears from Exchange Online but...
surajbudhani
Microsoft
MicrosoftThere is a good chance that someone mistakenly disabled the user account.
Can you check the soft deleted and inactive mailboxes:
Get-Mailbox <Mailbox Name> -SoftDeletedMailbox
Get-Mailbox <Mailbox Name> -IncludeInactiveMailbox
You can also check the deleted MSOL user to check if you find the user
If you find the user in any of these locations you can restore it from here
Undo-SoftDeletedMailbox
Or if you want to create a new shared mailbox and restore the data to it you can run a restore request. New-MailboxRestoreRequest -SourceMailbox <Soft Deleted Exchange Online mailbox> -TargetMailbox <Existing Exchange Online mailbox> -AllowLegacyDNMismatch
Can you check the soft deleted and inactive mailboxes:
Get-Mailbox <Mailbox Name> -SoftDeletedMailbox
Get-Mailbox <Mailbox Name> -IncludeInactiveMailbox
You can also check the deleted MSOL user to check if you find the user
If you find the user in any of these locations you can restore it from here
Undo-SoftDeletedMailbox
Or if you want to create a new shared mailbox and restore the data to it you can run a restore request. New-MailboxRestoreRequest -SourceMailbox <Soft Deleted Exchange Online mailbox> -TargetMailbox <Existing Exchange Online mailbox> -AllowLegacyDNMismatch
