In this post we want to highlight some upcoming changes around license re-assignment in Exchange Online to help admins get clarity on mailbox behavior and how license re-assignment works. The new beh...
Published Mar 21, 2022
Version 1.0
Blog Post
"If license re-assignment happens after more than 30 days, a mailbox will be assigned, but it won’t have any previous mailbox content. If the license is reassigned within 30 days of revocation, then mailbox content will be restored."
With regard to the above, so what happens if you delete a departed user's account, removing the Exchange license and converting their mailbox to a shared mailbox, but then after 30 days the individual is hired back and you need to relicense the mailbox? Does their old mailbox and new one co-exist, and assuming the answer is yes, what's the best way preferred way to move historical mail from an old shared mailbox to a new and active one?
If the above scenario sounds far fetched, you should meet the folks I work for. I've had to reactivate users that left the company on numerous occasions already. So far it's always been within 30 days, but I'm sure it's just a matter of time before I have to do this for someone that returns to the company after 31+ days...