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Error login Microsoft Admin

TugaTech 20 Reputation points
2026-06-01T12:57:35.5233333+00:00

Hello,

I am unable to enter in my Microsoft Admin account.

The password is accepted, but when i try to validate the login by phone or SMS, it gives me an error:
Error Code: 399287

This is the login for the admin account of Microsoft Admin, so there is no other way to "recover" it.

How can i solve this issue?
Thanks!

Microsoft Security | Microsoft Entra | Microsoft Entra ID

Answer accepted by question author

Sridevi Machavarapu 33,305 Reputation points Microsoft External Staff Moderator
2026-06-01T13:04:48.7333333+00:00

Hello TugaTech,

Thank you for sharing your details (user's email address, tenant id, phone number, country code and country) with us over Private Message

I have reached out to the engineering team to unblock MFA for your account. They have now unblocked it from the backend and removed the bad reputation on it. You should be able to log in to the Azure Portal without any issues.

Please try logging in and check if you can complete SMS authentication without any errors. Let me know if you encounter any issues.

I hope this information is helpful. Please feel free to reach out if you have any further questions.

If this answers your query, do click 210246-screenshot-2021-12-10-121802.png and Yes for was this answer helpful, which may help members with similar questions. If you have any other questions, let me know in the “comments” and I would be happy to help you.

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