Unable to sign in to admin portal for 365

Question

Unable to sign in to admin portal for 365

Christian Nylén 140

You helped me before and I have one more tenent where we no longer can sign in with sms 2FA and I think our country code has been blocked. Can you help us again so we can sign in and add Authenticator to our account?Regards

/Christian

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Answer 1

Helen Luu 2,025 Independent Advisor

Dear @Christian Nylén,

Based on the information you shared, I understand that you are having an issue related to your Microsoft Authenticator app, which is not working as expected and you have no alternative MFA method such as Phone or email.

Since you are the only user or administrator of the tenant, you will need to contact the Microsoft Support Data Protection team to have your MFA reset. Please locate the appropriate Microsoft support hotline and contact the frontline support team so they can raise a ticket on your behalf: Customer service phone numbers - Microsoft Support

Please note that this is a user-to-user support forum. Only Data Protection team can help you to revoke the session and reset your password, account, MFA...

Data Protection Team will first verify your ownership of the account and revoke your MFA once confirmed. After that, you can set up the Microsoft Authenticator app again on your new device.

Feel free to let me know if there are any updates or if you have further questions regarding this issue.

Kriston Sibarani 0 Reputation points

2026-07-14T14:46:52.2533333+00:00

Accepted Answer
Helen Luu 2,025 Reputation points Independent Advisor

2026-07-14T14:56:22.8833333+00:00

If you found my answer helpful, please click "Yes". This will help other users experiencing the same issue in finding the appropriate solution more quickly.
Christian Nylén 140 Reputation points

2026-07-15T11:00:32.5533333+00:00

You answer did not help. We need help to get our country code unblocked so we can get the code with sms. When we click send code to sms we get an error.
Helen Luu 2,025 Reputation points Independent Advisor

2026-07-15T13:30:19.4233333+00:00

Hello Christian,

This is a user-to-user forum, only the Microsoft Support team can investigate the reason, review the authentication configuration, and assist with account recovery if necessary.

In addition, Microsoft Support are able to revoke any existing authentication sessions or update your account settings so that you can regain access successfully.

Therefore, I would strongly recommend contacting Microsoft Support as soon as possible. They have the appropriate tools and permissions to further investigate the issue and help restore access to your account in the safest and quickest manner.

Please feel free to let me know if you have any updates or questions along the way.