How to fix authenticator that don't send me a notification to enter the code and not sending SMS

If you are not receiving notifications from the Microsoft Authenticator app and SMS verification codes, here are some troubleshooting steps you can follow:

1. Check Notification Settings: Ensure that notifications are enabled for the Microsoft Authenticator app on your device. Go to your device's settings and check the app permissions.
2. Verify Phone Number: Make sure that the phone number linked to your account is correct. You can check this in your user account settings.
3. Use Alternative Verification Methods: If notifications are not working, try using alternative verification methods such as entering a verification code manually if available.
4. Check for Blocked Numbers: Ensure that your device does not have any blocked numbers that might prevent receiving SMS messages.
5. Account Status: Confirm that your account is not blocked from using Microsoft Entra multifactor authentication. You may need to ask a global admin to check this for you.
6. Reinstall the App: As a last resort, consider uninstalling and then reinstalling the Microsoft Authenticator app to reset its settings.

If these steps do not resolve the issue, you may need to contact your organization's IT support for further assistance.

References:

• Microsoft Authenticator issues
• You don't receive a text or voice call that contains the verification code for Microsoft Entra multifactor authentication