I cannot login to my onmicrosoft teams business account.

Robert 0 Reputation points
2026-10-21T15:21:01.6566667+00:00

I would like to access my Microsoft teams account to manage my Essential subscription. I know the password but I changes my mobile phone and do not have the microsoft authenticator app. There is one more option to authenticate - text message, but it is not working, error appears:

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So know I'm stuck, I cannot accesss the account at all. What should I do?

Microsoft Teams | Microsoft Teams for business | Sign up and Sign in | Other
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  1. Jack-Bu 7,220 Reputation points Microsoft External Staff Moderator
    2026-10-21T16:14:16.3066667+00:00

    Hello Robert,

    Please note that only your Microsoft 365 administrators can help you in this situation. Even if you're an Admin yourself, you'll need to contact another administrator to reset your MFA settings. Here the step: Manage user authentication options.

    On the other hand, if you're the only Global admin, you will need to contact Data Protection team. They can help you regain access to your tenant.

    Please note that this forum is not Microsoft support, this is a user-to-user support forum. Therefore, I cannot directly escalate this for you. However, I can guide you how to contact Data Protection team.

    Please try Phone support with the script below. Visit the following page and reach out to phone number via: Customer service phone numbers - Microsoft Support

    From what I know, you will need to get past the initial AI system to reach the live support team. You can refer to the guide below for tips on how to get through more easily:

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    Hope you will soon regain access to your account

    Note: Please follow the steps in [our documentation] to enable e-mail notifications if you want to receive the related email notification for this thread.

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  2. Robert 0 Reputation points
    2026-10-22T07:59:32.9133333+00:00

    Thank you for the answer. After having followed all the steps, the AI assistant told me I'd be connected to a Microsoft administrator. However, no one assisted me and the call was mute...

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