Managing personal Outlook.com account settings, security, and privacy
Hello, thank you for reaching out to Microsoft Q&A.
What is the exact message you receive every day? Is it a one-time verification code, or another type of security email from Microsoft, such as a notification that unusual activity has been detected on your account?
Sign in with your Microsoft account on the Recent Activity page to check if there is any unusual activity in your account: https://account.live.com/Activity
If you notice any unusual activity, report it to Microsoft by selecting "This wasn't me" and secure your Microsoft account by changing your password and enabling two-factor authentication.
You can sign in with your Microsoft account on the security settings page here to enable two-factor authentication in your account -
https://account.live.com/proofs/Manage
Let me know if you still need more help.