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Data Protection Team

Natália Fernandes 0 Reputation points
2026-02-19T16:45:25.8533333+00:00

Need help!!!

I am the only Global Admin for my tenant. I lost access to my Authenticator APP because I changed my phone. I need to open a ticket with the Data Protection Team to reset my MFA.


Moved from:Microsoft Security | Microsoft Authenticator

[Moderator edit: Changed tags: Microsoft 365 & Office | Subscription, account, billing | For business | Other ]

Microsoft Security | Microsoft Entra | Microsoft Entra ID

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  1. Nam-D 3,870 Reputation points Microsoft External Staff Moderator
    2026-02-20T08:51:25.6766667+00:00

    Hello @Natália Fernandes,

    Thank you for posting your question in the Microsoft Q&A forum.  

    If you are the only administrator in your organization, you will need to contact the Microsoft Data Protection team for further assistance. Please locate the appropriate support phone number for your country or region and contact Microsoft Support so the frontline team can raise a service request on your behalf: Customer service phone numbers  

    When calling the support number, the experience may vary depending on your country or region:  

    • In some regions, you may hear an automated message for approximately 30 seconds. You can ignore this message and wait for the prompt, then select “1” for Business email user and “1” again for Technical support.  
    • In other regions, you may be guided through an automated conversation similar to the following:  
      • The system asks what issue you are experiencing → Authenticator  
      • Product in use → Office 365 for Business  
      • Account type → Company account  
      • Administrator status → Yes  
      • Are there other administrators in the organization? → No  
      • Proceed to create a service request → Yes  

    If your Office 365 Business or Education subscription was purchased through a partner or reseller, and you are unable to open a service request directly, please contact your reseller’s support provider and ask them to raise the service request on your behalf.  

    Alternatively, if you are unable to reach support by phone, you may create a temporary trial tenant to submit a support request for the block access tenant through the Microsoft 365 admin center. You can start with a trial license here: Microsoft 365 Business Plans and Pricing | Microsoft 365  

    Important: Please remember to cancel the trial subscription after your original account issue is resolved to avoid any future charges.  

    Note: Please understand that as a forum moderator, my primary goal is to provide helpful guidance and support through general troubleshooting steps. While I don’t have access to internal systems or test devices required to resolve backend/account issues, I truly appreciate your understanding of these limitations.    

    Thank you for choosing Microsoft, and I am looking forward to your response. If anything is unclear, please don’t hesitate to reach out to me.   


    If you have extra questions about this answer, please click ""Comment"".  

    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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