Hi BenjaminDau,
If you're receiving unsolicited verification codes, this means that someone is trying to login your account and unable to pass the verification process. Kindly see the suggestions provided in this article on how to keep your Microsoft account safe and secure.
To notify us and have us get back to you, simply reply to this post.
I am having the same issue where all the unsolicited verification codes were sent from the same sender that is basically under the name ‘Microsoft’ and does not show the number of the text sender. I have by far received 7 unsolicited codes in one afternoon and strangely the language of these texts is not my default language!! I am making sure to secure my account log in by updating my password and using all the other possible measures. But if the suspicious ‘hacker’ keeps trying to login to my account and requests for verification code that he/she will basically never receive, what can I do to stop receiving the endless texts of unsolicited verification codes? Can Microsoft Office 365 actually do something to track the ‘hacker to be’ or stop the trouble and suspicion I am experiencing??