Hello @John Doe Customer
Thank you for sharing required details over email.
The issue pertains to a tenant lockout, where no other global admin in the tenant has the necessary permissions to re-register MFA.
To resolve this, we have engaged our Data Protection team through a support ticket. They will reach out to you via email or phone to help restore access to the tenant and assist in resolving the issue.
Once the issue has been resolved by our support team, please feel free to revisit and kindly click "Accept Answer," as this will be helpful to other community members facing similar issues.