I am wondering what happens to the user's onedrive when his mailbox is converted to a shared mailbox.
According to the Microsoft docs, the user's onedrive is retained.
But if you create a shared mailbox from scratch, it doesn't contain a onedrive folder.
Will converting a user's mailbox to a shared one and then revoking his license delete the user's onedrive after 30 days? (Default policy)
Neither removing the license, or converting to a shared mailbox remove the One Drive Files. Only deleting the user from Azure or removing the user from an AADConnect sync from on-prem does that. One Drive has no idea what type of mailbox is being used.
The retention period for cleanup of OneDrive begins when a user account is deleted from Azure Active Directory. No other action will cause the cleanup process to occur, including blocking the user from signing in or removing the user's license. For info about removing a user's license, see Remove licenses from users in Microsoft 365 for business.
If the user is coming back however, I see no reason to remove the license, but simply converting to a shared mailbox and removing that license will not affect OneDrive as long as the user exists in Azure and is not deleted.
Hi Andy,
Thank you for your answer.
I can see that opinions are shared between both sides.
Did a microsoft employee confirm that ? If yes, please share the link
Thank you for your time
I can confirm it :) Converting to a shared mailbox is part of our term process. Until the account is removed from Azure, the One Drive stays intact.
For example: If you convert to a shared mailbox and 30 days later, remove the account from Azure, the one drive access is actually 60 days since its retained for 30 days after its deleted and the manager is given access automatically,
You can test this out and you will see what I mean.
Ok cause it also is part of our term process. But after converting the mailbox, we remove de licence. Should we keep it?
I just want to make sure that removing a licence from a converted mailbox wont activate the 30 days retention policy.
Do you remove the licence after converting the mailbox?
Hello,
You should probably start with mailbox conversion documentation:
about-shared-mailboxes
You'll have 30 days for OneDrive retention:
get-access-to-and-back-up-a-former-user-s-data
Hi Seth,
Thanks for the fast answer.
I have read all that, but I am still wondering. It is not CLEARLY stated that converting a user mailbox to a shared one activate the 30 days onedrive retention.
It is said that removing a licence of a user keeps the onedrive files
It is said that a shared mailbox does not have a onedrive storage
No where do they state that converting a mailbox to a shared one will activate the 30 days onedrive retention for that user.
So, my question is, will the user on pregnancy leave keeps her file when she come back?
@SamuelConsigny-3529
After you convert a user's mailbox to a shared mailbox, do not delete the user and remove her license. If the user has license, SharePoint will keep her OneDrive.
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Hi Emily,
Thank you for your answer, as I feared this is what would happen.
I will not click Accept Answer as I would like to have more comments on this before thinking this is true.
If someone from microsoft could confirm this, that would be great
I think Andy David’s answer is right. If Andy David’s answer is helpful, please remember accept his answer.
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