I have received 2 or 3 of these email for the past few days, but i haven't requested any code and this email is unknown to me. Help?

The Email :
''Hi,

Thanks for helping us verify your Microsoft account (*** Email address is removed for privacy ***)!

Here is your code: *****

If you didn't request this code, we recommend that you go to https://account.live.com and change your password.

Thanks,
The Microsoft account team"