Microsoft Security | Microsoft Authenticator
A Microsoft app for iOS and Android devices that enables authentication with two-factor verification, phone sign-in, and code generation
Unable to Verify Identity for MS Login – Error 399287
![](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(304, 28.999999999999996%, 39%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ED%3C/text%3E%3C/svg%3E)
Damian
0
Reputation points
Sehr geehrtes Team, ich kann mich als Admin nicht mehr anmelden, da die Verifizierung per SMS nicht funktioniert. (Andere Methoden sind leider nicht möglich).
Können Sie mir helfen?
Microsoft Security | Microsoft Authenticator
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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(128, 8%, 22%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EA%3C/text%3E%3C/svg%3E)
Anonymous2025-09-29T06:27:54.42+00:00 Hello @Damian
Welcome to Microsoft Q&A Platform. Thank you for reaching out & hope you are doing well.
I understand you're experiencing issues logging into your Azure account due to MFA. Based on error code 399287, it appears your multi-factor authentication method is blocked because the phone number has a bad reputation.
If there is another global admin on your account, they can assist you in re-registering your MFA. Please reach out to your global admin.
If this is a personal account and only you use it, could you please send the below details via Private message to assist you further.
email address
phone number
tenant id
country
country code
Error Screenshot
Thanks
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