If you are unable to receive the approval prompt or security code from the Microsoft Authenticator app for multi-factor authentication (MFA), you can try the following steps:
- Check Your Phone Settings: Ensure that your phone is connected to the internet and that notifications are enabled for the Authenticator app. Sometimes, third-party security apps may block notifications, so consider disabling them temporarily.
- Use Alternative Verification Methods: If you have set up other options for security verification, select Other verification options on the sign-in page and try to authenticate using a different method, such as a phone call or SMS text message.
- Verify Your Phone Number: Make sure that the phone numbers associated with your account are correct. If you have access to another global admin, ask them to verify your phone settings.
- Reset MFA: Since you mentioned you are the only admin, you might need to reset your MFA settings. You can do this by going to the Azure portal and navigating to your user profile under Microsoft Entra ID. If you cannot access the portal, you may need to contact Microsoft support again for assistance in resetting your MFA.
- Try Signing In Again: After checking the above, attempt to sign in again to see if the issue persists.
If these steps do not resolve the issue, you may need to open a support case with Microsoft to troubleshoot further.
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