Authenticator doesn't recognize my account

Try these steps in order:

1. In Microsoft Authenticator, add the account manually instead of relying on restore:
   • Open the app.
   • Select + Add account.
   • Choose the correct account type: Personal account or Work or school account.
   • Sign in with the account.
2. If sign-in fails, check the common app issues:
   • Make sure the app opens normally and the account list is visible.
   • Update Microsoft Authenticator from the device app store.
   • Make sure notifications are enabled.
   • Switch between Wi‑Fi and mobile data.
   • Make sure Airplane mode is off.
   • Check that the device Date & time are correct.
   • If using VPN, disconnect it and try again.
   • Restart the device.
3. If the account was restored and shows Action required:
   • In the Accounts screen, tap the account.
   • Tap the account tile again.
   • Select the option to sign in to recover it.
   • Enter the password, then confirm the email address or phone number if prompted.
4. If the app cannot restore credentials because there is no access to the backup account, the account must be added again. For access to the Microsoft backup account, use the Microsoft account sign-in helper.
5. If the issue is with a personal Microsoft account and the username is not recognized or the account cannot be signed in, use the Sign-in Helper tool.
6. If the issue is with a work or school account and the steps above do not fix it, contact the IT admin or helpdesk.
7. If the problem continues, send logs from Authenticator:
   • Open the app.
   • Go to the app’s top-level menu.
   • Select Send feedback.

References:

• Troubleshoot problems with Microsoft Authenticator
• Restore account credentials from Microsoft Authenticator
• I can't sign in to my Microsoft account
• My microsoft authenticator app is not recognizing my microsoft account email so I can not add an account - Microsoft Q&A