Managing personal Outlook.com account settings, security, and privacy
This just means that someone is constantly trying to reset your password.
This might indicate that your email/password combination was in one of those giant leaks.
This is generally all automated, so these bad actors attempt to reset thousands of accounts at once.
Unless you initiated the process to reset your password, you can safely discard that email.
The reason you received that email means that your account security is working and has an additional step to prevent your password from getting reset.
At some point they stop trying to reset your password.
Always remember to use two factor authentication, and to never give that code to anyone. No employee will ever request it.