office 365 admin lost authenticator

Question

Hi

I lost my phone and now cannot access one of my Office 3655 accounts as Authenticator is not seeing the code sent when I try to log into the account. I cannot reconnect Authenticator as I cannot sign in to that account because code cannot be verified. How do I get authenticator on new phone linked to my existing Office 365 account.
I am the admin and also the main account I cannot register with either of them.

Very frustrating!

Answer 1

If you've lost your phone and cannot access your Office 365 account due to the Microsoft Authenticator app not being able to verify your identity, you can follow these steps:

1. Contact Another Admin: If there is another global admin in your organization, ask them to reset your Multi-Factor Authentication (MFA) settings. They can do this by signing in to the cloud service portal, selecting your account, and managing user settings to require you to provide contact methods again.
2. Use a Trial Tenant: If you are the sole admin and cannot access any other admin account, you might consider creating a trial Microsoft 365 tenant. This will allow you to access the Admin Center and submit a support ticket requesting assistance from the Data Protection team regarding your previous tenant.
3. Contact Support: If you are unable to resolve the issue through the above methods, contacting Microsoft support directly is crucial. You can call the support hotline and follow the prompts to reach a support agent who can assist you further.
4. Verify Your Identity: Be prepared to verify your identity when contacting support, as they may require information such as your phone number, email, and other account details.

These steps should help you regain access to your Office 365 account and set up the Authenticator app on your new phone.

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References:

• How Do I Regain Access to My Account After Losing Access to Microsoft Authenticator? (Urgent Request). - Microsoft Q&A
• I cant log in to my business account because it is requiring Authenticator app which I do not have - Microsoft Q&A