I am not able to sign in authenticator and teams in my new mobile

Question

Hi I changed my device recently,I am not able to sign in teams and authenticator , as authenticator is mandatory am stuck with old mobile device

Answer 1

@Mano Dayalan Thank you for reaching out to us, As I understand you are unable to sign in to teams as authenticator app is registered on the old mobile device.

If you are normal user (not the admin) - you need to reach out to the Global admin of your tenant to re-register mfa - https://learn.microsoft.com/en-us/entra/identity/authentication/howto-mfa-userdevicesettings#:~:text=Require%20re%2Dregister%20MFA

• Require re-register MFA deactivates the user's hardware OATH tokens and deletes the following authentication methods from this user: phone numbers, Microsoft Authenticator apps and software OATH tokens. If needed, the user is requested to set up a new MFA authentication method the next time they sign in.

Reference: - https://support.microsoft.com/en-us/account-billing/common-problems-with-two-step-verification-for-a-work-or-school-account-63acbb9b-16a1-47b9-8619-6a865e8071a5

If you are only the admin of your tenant, you need to contact our support via - https://support.microsoft.com/en-us/topic/global-customer-service-phone-numbers-c0389ade-5640-e588-8b0e-28de8afeb3f2 where you need to work with our data protection team.

Refer to this QnA post - https://learn.microsoft.com/en-us/answers/questions/1455267/global-admin-account-locked-unable-to-access-entra for account lockout scenarios.

Let me know if you have any further questions, feel free to post back.

Please remember to "Accept Answer" if answer helped, so that others in the community facing similar issues can easily find the solution.