Unauthorized 2FA Notifications & Without Failed Login Records

Question

I keep receiving multiple Microsoft Authenticator Authentication requests on a daily basis and I am not initiating them. I assumed someone is trying to log in to my account but I can’t find any information under my activity, I have denied them all.

Is that any way to stop it?

Answer 1

Hi,

This is happening way too often. Disabling the sign in capability for the alias should help.

https://www.yourwindowsguide.com/2025/04/microsoft-single-use-code-email.html

Hiding or disabling the sign-in capability for your email would get rid of the single-use code emails. Hiding it would mean that it is not possible to log in using the same, but you can use it for emailing. For that, do the steps below:

• Make a new Alias for login purposes at this link.
• Next, fix this alias as the primary alias at https://account.live.com/names/manage page.
• Now, the next step is to disable the sign-in capability for the original email, which is possibly hacked in a data breach. Concurrently, You can manage that on this page. Uncheck the Email and click Save.
• Furthermore, as expected, you can still send and receive email from the old Alias – you have just disabled its ability to sign in. Remember to keep the new alias secret or use it elsewhere. The dropdown on Outlook apps, like Android and Outlook New on Windows, would show you all your addresses to send an email from.
• Now, when someone tries to use the breached address, they will hit an error. The error message would say that the Email does not exist.