microsoft authenticator is not working

Question

I get 2 digit code from authenticator and I type in and I get an error.

Answer 1

Try these checks in order:

1. Make sure Microsoft Authenticator is unlocked on the phone when approving the sign-in. If the app is locked, the number-matching prompt may not complete.
2. Turn on Authenticator notifications in the phone settings. Silent or disabled notifications can prevent the approval prompt from appearing correctly.
3. Update Microsoft Authenticator to the latest version. Versions older than 12 months are not supported.
4. Check network connectivity. Switch between Wi-Fi and mobile data, and make sure Airplane mode is off. If a VPN is enabled, disconnect it and test again.
5. Verify the phone date and time are correct.
6. In Authenticator, open Settings and turn off battery optimization for the app, then check Notification Settings and make sure Show notifications is enabled.

If the app shows the 2-digit number but every attempt fails, complete the sign-in in Authenticator, Company Portal, or the primary Microsoft app on the device.

If this is a work or school account and the problem continues, contact the organization’s IT admin/Help desk to clear or reset the MFA registration so the device can be registered again.

If the device was lost or changed, sign in with another method if available, then update or replace the Authenticator registration.

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References:

• Troubleshoot problems with Microsoft Authenticator
• Authentication did not complete
• Authenticator Did Not Complete Login
• Common problems with two-step verification for a work or school account