A Microsoft app for iOS and Android devices that enables authentication with two-factor verification, phone sign-in, and code generation
Hello Thomas,
If you have already regained access to the account and removed the unfamiliar email address, but Microsoft still offers that address as a verification method, it may be a security/recovery method rather than an account alias. These are managed separately, so an address does not necessarily need to appear under your normal sign-in aliases for it to be presented during account recovery.
I recommend the following:
Secure the account first
Change your Microsoft account password from a trusted device.
Review **Recent activity** for unfamiliar sign-ins.
Remove any unfamiliar security information or authentication methods that are still listed.
Enable your own trusted authentication method, such as Microsoft Authenticator or another available method.
**Check the account's security information**
Sign in to your Microsoft account and open the Security section. Check whether the unfamiliar address is listed as a verification method, alias, or other security information.
**If the unfamiliar address is no longer listed but is still being offered during verification**, don't assume that the address still exists as an alias. Microsoft may be using previously registered security information as part of the account-recovery process.
**Use Microsoft's account recovery/security support if you cannot remove it.**
Because this involves a potentially compromised account and an authentication method you don't control, account-specific support will be required if the unwanted verification method remains attached after you've secured the account.
Also, avoid repeatedly attempting verification through the unfamiliar address. Do not provide anyone with verification codes, passwords, recovery codes, or device/security keys.
If you can post the exact screen/message that appears when Microsoft asks you to send the code (with the email address partially redacted), it would help determine whether Microsoft is treating it as a security method, alias, or another recovery mechanism.