Managing personal Outlook.com account settings, security, and privacy
Hello len vergosa
I’m sorry this happened. The unfamiliar verification email shown in the screenshot indicates that the account’s security information may have been changed.
Since the AI answer has already given out some really useful information. I will give my answer adding into it.
If you can reach a page saying “Security info change is still pending,” select "Let us know” to report that you did not make the change. For your reference: What does “Security info change is still pending” mean? | Microsoft Support
Otherwise, use the official Microsoft account Sign-in Helper
Please note that this is a user-to-user support forum. Moderators and contributors, including external Microsoft employees, are not allowed to directly interfere with Microsoft product features or access back-end systems. Our role is limited solely to providing technical guidance on reported incidents, requests, or ideas.
I truly appreciate your time and understanding.