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How to Access a Former Employee's Microsoft 365 Mailbox Without a License
Question details
An administrator is unable to access a former employee's Microsoft 365 email account after resetting the password because the Exchange Online license was removed.
- Product
- Microsoft 365
- Device & OS
- not provided
- Scenario
- The administrator needs to review the old email data of a departed employee without purchasing or assigning a new Exchange Online license.
- Observed behavior
- Sign-in to the mailbox fails despite a successful password reset because the user account no longer has an assigned Exchange Online license.
Ensure you are logged in with Global Administrator or Exchange Administrator privileges in the Microsoft 365 admin center before attempting to manage unlicensed mailboxes.
Convert the Account to a Shared Mailbox
Convert the user mailbox to a shared mailbox, which allows other users to access the data without requiring an active Exchange Online license.
A shared mailbox does not require a license as long as its storage stays under 50 GB. This is the most common and cost-effective method for retaining a former employee's emails.
Log in to the Microsoft 365 admin center, navigate to 'Users', and then click on 'Active users'.
Select the former employee's account. In the flyout pane, click on the 'Mail' tab, then select 'Convert to shared mailbox' and confirm.
Once converted, assign 'Read and manage' permissions to yourself or the manager who needs to review the emails.
Go to the 'Licenses and apps' tab for that user and uncheck the Exchange Online or Microsoft 365 license to free it up for other uses.
Use eDiscovery for Inactive Mailboxes
If a retention policy was applied before the license was removed, you can use eDiscovery to search and export the mailbox data.
Temporarily Reassign an Exchange Online License
Assign an available license temporarily to quickly restore direct login access to the mailbox.
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Frequently Asked Questions
Can I access a Microsoft 365 mailbox after the license is removed?
Direct sign-in is disabled when the Exchange Online license is removed. You must either temporarily reassign a license, convert the account to a shared mailbox, or use eDiscovery if a retention hold was placed.
How long does Microsoft retain mailbox data after a license is canceled?
Mailbox data is typically preserved for 30 days after the license is removed. After this grace period, the data is permanently deleted unless a retention policy or Litigation Hold was previously applied.
Does a shared mailbox require a Microsoft 365 license?
No, a shared mailbox does not require a paid license as long as its storage remains under 50 GB and you do not require advanced features like in-place archiving.
Why didn't resetting the password restore mailbox access?
Resetting the password only grants authentication access. If the account lacks an active Exchange Online license, the system will prevent access to the mailbox itself regardless of having the correct password.
