I am the only Global Administrator and lost the device containing my only MFA method.

Ajit Kumar 0 Reputation points
2026-09-14T17:22:27.86+00:00

Hello Microsoft Support,

I am the only Global Administrator for our Microsoft 365 tenant, and I am currently locked out because I lost access to the mobile phone containing my Microsoft Authenticator app.

Tenant domain: ansabyte.com Administrator account: ******@ansabyte.com

I know my correct password, but I cannot complete the MFA verification because I no longer have access to the registered Microsoft Authenticator device.

There is no other Global Administrator in our tenant who can reset my MFA authentication methods.

As a result, I am unable to access the Microsoft 365 Admin Center, Microsoft Entra admin center, or manage the tenant.

Please help me recover access to the Global Administrator account and reset/re-register the MFA authentication method for ******@ansabyte.com.

I am willing to provide any information or documentation required to verify my identity and ownership of the tenant/company.

Since I am the sole Global Administrator and cannot access the tenant because of MFA, please escalate this case to the appropriate Microsoft Data Protection / Tenant Recovery team.

Thank you for your assistance.

Microsoft 365 and Office | Subscription, account, billing | For business | Other
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  2. Bence Weiszmann 1,720 Reputation points
    2026-09-14T17:27:59.44+00:00

    Dear @Ajit Kumar

    If you don’t have any other Global Administrator or alternative authentication method available, you will need to contact the Microsoft Data Protection Team using the following link and the methods described above. They can assist with recovering access when you’re unable to complete the verification process using your existing authentication methods. You can start the following link: https://support.microsoft.com/en-us/support/

    Some countries, the call may be handled by an automated conversation. For example:

    1. What kind of problem are you concerned about?
      1. Authenticator
    2. What kind of product are you using?
      1. Office 365 for business/Azure portal/Entra ID
    3. Is this an education or company account?
      1. Company
    4. Are you an administrator?
      1. Yes
    5. Do you have another administrator in your organization?
      1. No
    6. You need to create a service request
      1. Yes

    Once you reach a support engineer, I would be very explicit:

    “This is a Microsoft Entra tenant lockout. The only Global Administrator account is no longer accessible, and there are no other Global Administrators in the tenant. We need to recover administrative access to the tenant. Please escalate this case to the Data Protection / Tenant Recovery team.”

    Have the following information ready for the ownership verification:

    • Tenant ID
    • Initial *.onmicrosoft.com domain
    • Microsoft 365 subscription and billing information
    • Company information
    • Details about the previous Global Administrator
    • Any other information Microsoft requests to verify ownership

    Other option would be to create a temporary Microsoft 365 tenant using a trial subscription. You can then use this tenant to access the Microsoft 365 Admin Center and contact Microsoft Support. Once the new tenant is set up, sign in to the Microsoft 365 Admin Center and go to Support --› Help & Support. Open a new support request and explain that you need help recovering access to your original tenant. In the request, mention that you are the Global Administrator of the original tenant and that you are currently locked out because you no longer have access to the MFA method required to sign in. **One important thing:**the trial tenant is only needed to contact Microsoft Support. After you regain access to your original tenant and the issue has been resolved, remember to CANCEL the trial subscription so you don't accidentally get charged.

    Microsoft's instructions for cancelling a trial subscription can be found here: https://learn.microsoft.com/en-us/microsoft-365/commerce/subscriptions/cancel-your-subscription?view=o365-worldwide&#how-do-i-cancel-my-free-trial

    Best regards, Bence

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