Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hello mark mehle,
Thank you for reaching out in Microsoft Q&A forum.
I understand how frustrating it is to be locked out of your Office 365 account because the confirmation codes are going to an email you can no longer access.
When the recovery email is no longer usable, the only way to regain access is to complete Microsoft’s account recovery form. For security reasons, Microsoft Support cannot bypass verification or manually unlock the account.
You can reach Account & Billing support by signing in at: https://support.microsoft.com/contactus (choose “Microsoft account” > “Account recovery”).
If you cannot sign in at all, go to I can't sign in to my Microsoft account page and use Sign in helper, this will route you to an available support representative.
Hope this helps