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I would like to provide you with the official guidance for removing a domain from your Microsoft 365 organization: Remove a domain - Microsoft 365 admin | Microsoft Learn
And please keep in mind the following reminders before removing a domain:
Domain Usage
Make sure no users, groups, or resources are currently using the domain. All email addresses and aliases should be updated to a different domain.
DNS Records
If your DNS is managed outside of Microsoft, don’t forget to delete any related DNS records after the domain is removed.
Permissions Required
You’ll need to be signed in as a Global Administrator to complete this action.
Additionally, just a quick note, as a forum moderator, I don’t have access to internal tools or your admin portal to directly remove the domain. However, I can offer guidance based on the shared knowledge and experience within this community space.
I hope this information helps! If you have any other questions or concerns, feel free to leave a comment below.
Thanks so much for your understanding!
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