Microsoft Security | Microsoft Entra | Microsoft Entra ID
A cloud-based identity and access management service for securing user authentication and resource access
Cannot login into my business account, getting code 399287;
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Oлена Присяжненко
0
Reputation points
cannot raise support request as for that I need to be logged it, which I cannot do because of 399287. Error Code: 399287
Microsoft Security | Microsoft Entra | Microsoft Entra ID
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(220.8, 92%, 31%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ESM%3C/text%3E%3C/svg%3E)
Sridevi Machavarapu 27,395 Reputation points Microsoft External Staff Moderator2026-03-16T09:37:44.91+00:00 Hello Oлена Присяжненко,
I understand you're experiencing issues logging into your Azure account due to incomplete MFA. Based on error code 399287, it appears your multi-factor authentication method is blocked because the phone number has a bad reputation.
We need few details to proceed further. Please check your
Private messagestab and provide those details.
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