Can't add account to Authenticator

Question

I need to access our running club outlook.com account.

I cannot add the account to Authenticator.

I cannot access the account with password.

Everything worked fine until I changed my phone and now I can't access the account on phone or windows pc, or laptop.

Seems to all hinge on account being linked to Authenticator.

Can anyone help?

Answer 1

Because access is blocked by Microsoft Authenticator on a changed phone, recovery depends on whether this is a personal Outlook.com account or a business/organization account.

For a personal Outlook.com account (running club account is likely personal):

1. Go to the Microsoft account Security page: https://account.microsoft.com/security.
2. Try to sign in using any available alternative method (for example, SMS, email code, or a different verification option) instead of Authenticator.
3. Once signed in, go to Manage how I sign in and either:
   • Add Microsoft Authenticator again as a verification method:
     • Select Add a new way to sign in or verify → Use an app.
     • In the Authenticator app on the new phone, tap +, choose Personal account, then Scan a QR Code and scan the QR shown on the security page.
   • Or, if already added, turn on Two-step verification and reconfigure Authenticator as prompted.

If the account is a work/school (business) account and there is an admin:

1. Contact the organization’s Microsoft 365/Entra admin.
2. Ask the admin to reset the MFA methods (Require re-register multifactor authentication) so Authenticator can be set up again on the new phone.

If this is a business/organization account and there is only one admin (and that admin is locked out):

1. Contact Microsoft Support by phone using the regional Customer service phone numbers - Microsoft Support page.
2. Clearly state that this is a tenant lockout and that there is no other admin who can reset MFA.
3. Ask to open a ticket with the Data Protection team so they can verify identity and help regain access to the admin account.

If no alternative sign-in method works and no admin can reset MFA, only Microsoft’s Data Protection process can restore access.

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References:

• How to add your accounts to Microsoft Authenticator
• I have a Micrsoft business account and I am the admin and the only user registered under this account. I can't log in because i have replaced my phone and the authenticator doesn't work.
• I need to reset my mfa methods
• Microsoft authenticator sending me into a spiral
• Severity A Situation - Locked out of global admin account (MFA) - business down
• Requesting a Tenant Admin MFA Reset