Lost my phone, authenticator app not receiving notifications to setup 2FA

If you have lost your phone and reinstalled the Microsoft Authenticator app, but are not receiving notifications to set up two-factor authentication (2FA) for your Microsoft accounts, here are some steps you can take:

1. Check Notification Settings: Ensure that notifications are enabled for the Authenticator app on your device. Go to your device's settings and verify that the app has permission to send notifications.
2. Re-register for MFA: Since you have lost access to the Authenticator app, you may need to re-register for Multi-Factor Authentication (MFA). You can do this by having another admin reset your MFA settings. They can follow these steps:
   • Sign in to the cloud service portal as an admin.
   • Go to the MFA management page.
   • Select your account and manage user settings to require you to provide contact methods again.
3. Use Alternative Verification Methods: If you are unable to receive notifications, consider using alternative methods for verification, such as receiving a verification code via SMS or using a backup email.
4. Contact Support: If the above steps do not resolve the issue, consider reaching out to Microsoft support for assistance in regaining access to your accounts.

By following these steps, you should be able to set up 2FA on your Microsoft accounts again.

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