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Azure MFA SMS text not working.

SA_South 21 Reputation points
2023-01-09T18:34:49.357+00:00

SMS for MFA does not work anymore.

Error Code: 500121
Request Id: 3f070911-1aad-4f35-96b2-f41c44c68200
Correlation Id: 52c43daf-3061-4a59-8440-f4fb6e6467d9
Timestamp: 2023-01-09T18:11:05Z

Microsoft Security | Microsoft Entra | Microsoft Entra ID
Accepted answer
  1. JamesTran-MSFT 36,911 Reputation points Microsoft Employee Moderator
    2023-01-10T23:13:55.467+00:00

    @SA_South Thank you for your post!

    I looked into the Correlation ID and Timestamp that you provided, and it looks like you ran into the below error but were eventually able to authenticate after a push notification was sent to your phone authenticator.

    https://login.microsoftonline.com/error 278085-image.png

    If you're still having issues logging in, I'd recommend reaching out to an Admin within your tenant to see if there are any issues with your MFA settings. If you don't have any other users or admins within your tenant and are completely locked out, you can try reaching out to our Global Customer Service team or contacting the Azure Data Protection team for further assistance - (866-807-5850).

    If you have any other questions, please let me know. Thank you for your time and patience throughout this issue.

    Please remember to "Accept Answer" if any answer/reply helped, so that others in the community facing similar issues can easily find the solution.

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  1. Luke Murray 11,436 Reputation points MVP Volunteer Moderator
    2023-01-09T19:25:29.327+00:00

    We are unable to look at the correlation IDs and requests on this forum; your best bet would be a support case with Microsoft:

    Things to look at:

    Is this happening for one person or multiple people?
    Is the phone number correct etc

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