Lost all connection to the Authenticator

Try these steps in order:

1. Check connectivity: switch between Wi‑Fi and mobile data, and make sure Airplane mode is off.
2. Make sure Microsoft Authenticator is updated. Versions older than 12 months are not supported.
3. In Authenticator, check Settings and turn off battery optimization.
4. Go to Settings > Notification Settings and make sure notifications are enabled.
5. Make sure the device date and time are correct, and install any pending device updates.
6. If a VPN is enabled, disconnect it and try again.
7. Restart the device.

If the app is stuck during recovery on Android:

1. Open Authenticator.
2. Select Restore from backup or Begin recovery before signing in.
3. Sign in with the same personal Microsoft account that was used for the backup.
4. If Restore from backup does not appear, remove or sign out of all accounts in Authenticator, then try recovery again.

If recovery still does not complete:

• For any restored account showing Sign in to restore your account, tap Sign in for that account and complete the extra verification.
• If the issue continues, send logs from Authenticator: open the app menu and select Send feedback.
• For work or school accounts, contact the IT admin.
• For personal accounts, contact Support or use the Microsoft Authenticator app forum.

References:

• Troubleshoot problems with Microsoft Authenticator | Microsoft Support
• [iOS
• Authentication did not complete | Microsoft Support