I am writing to request assistance with resetting my two-factor authentication settings. I previously used Microsoft Authenticator on a mobile device（Iphone) that is no longer accessible, and I am unable to log in to my account on a new phone(iphone).

Question

I am writing to request assistance with resetting my two-factor authentication settings. I previously used Microsoft Authenticator on a mobile device（Iphone) that is no longer accessible, and I am unable to log in to my account on a new phone(iphone).

Unfortunately, I did not enable cloud backup, and I do not have access to any other trusted devices. I am currently locked out of my account and cannot complete the authentication process."

Answer 1

If you are locked out of your account and cannot access your two-factor authentication settings due to the loss of your previous device, you will need to have another cloud services admin reset your Multi-Factor Authentication (MFA) settings. Here are the steps they should follow:

1. Sign in to the cloud service portal as an admin.
2. Go to the MFA management page.
3. Select the checkbox for your account.
4. Choose Manage user settings.
5. Check the box for Require selected users to provide contact methods again and then save the changes.

After this process, you should be able to go through the registration process for MFA again on your new device. If you need further assistance, consider reaching out to your IT support team for help.

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References:

• Frequently asked questions about Microsoft Entra multifactor authentication
• Can't use Azure Multi-Factor Authentication to sign in to cloud services after you lose your phone or the phone number changes