Locked Out Of Microsoft account - Error Code: 399287 Sorry, we're having trouble verifying your account. Please try again.

Question

Hi Community

I am locked out of my onmicrosoft.com account.

Error code: 399287

Sorry, we're having trouble verifying your account. Please try again.

I have tried to log a support case via phone for weeks with no success.

Only the text method is shown on the 'Verify your identity' screen with no option to choose any other methods.

I urgently need access to this account, any assistance will be appreciated.

Thank you

JE

Answer 1

Hello JE

Thank you for sharing your details(user's email address, tenant id, phone number, country code and country) with us over Private Message

I have reached out to the engineering team to unblock MFA for your account. They have now unblocked it from the backend and removed the bad reputation on it. You should be able to log in to the Azure Portal without any issues.

Please try logging in and check if you can complete SMS authentication without any errors. Let me know if you encounter any issues.

As a best practice, I recommend registering the Microsoft Authenticator method for your account instead of relying on SMS. SMS and voice call authentication methods are more vulnerable to IRSF attacks (telephony fraud) and are generally less secure.

For better practice, I recommend registering with Microsoft Authenticator method to your account instead of SMS method as these SMS/Voice telecom auth methods are susceptible to IRSF attacks telephony fraud.

I hope this information is helpful. Please feel free to reach out if you have any further questions.

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