Hi Brilliant,
Good day.
Thank you for posting to the Microsoft Community. We are glad to assist.
Yes, you can revoke access to a shared mailbox after assigning an M365 license to it. To do this, you can follow these steps:
- Sign in to the Microsoft 365 admin center using your admin credentials.
- Go to the "Groups" section and select "Shared mailboxes."
- Find the shared mailbox you want to revoke access to and click on it.
- In the "Members" tab, select the user or users you want to remove from the shared mailbox.
- Click on the "Remove" button and confirm the action.
Once you have removed the user or users from the shared mailbox, they will no longer have access to it.
After the steps above you can follow these steps to turn it into a regular mailbox:
Please do not hesitate to contact me with any questions or concerns. I look forward to hearing from you.
Best regards,
Community Moderator