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
error 399287 when trying to login to my Microsoft account
![](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(121.6, 45%, 21%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ECV%3C/text%3E%3C/svg%3E)
Cobus van der Vyver
0
Reputation points
Good day, We have a client who's Global Administrator MFA Phone number has been block. Meaning we cannot access the account.
We get the following error when trying to sign in and verify with the phone number
Error Code: 399287
Request Id: c5d84723-b904-4d79-9091-7d7915777200
Correlation Id: 49c85179-d8b4-4d86-9427-1965c91145c9
Timestamp: 2025-10-27T13:30:56Z
Unfortunately we do not have any other options available
Microsoft Security | Microsoft Authenticator
Sign in to answer