ms authentication not working

Question

I can't access outlook business because of 2 factor authentication. My ms authentication device is down so I can't access it.

Answer 1

If you are unable to access Outlook due to issues with two-factor authentication and your Microsoft Authenticator device is down, you can try the following steps:

1. Use Alternative Verification Methods: If you have set up other options for security verification, select Other verification options during the sign-in process and try again by selecting a different option.
2. Check Your Phone Numbers: Ensure that your phone numbers are correct in your user account settings. You can ask another global admin to confirm this for you.
3. Account Block Check: If the above steps do not resolve your issue, your user account may be blocked from using Microsoft Entra multifactor authentication. A global admin can check this by going to the Azure portal and verifying if the Block sign in option is enabled for your account. If it is, they can disable it.

If you do not have access to any alternative verification methods and cannot resolve the issue, you may need to contact your IT support for further assistance.

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References:

• Frequently asked questions about Microsoft Entra multifactor authentication