Thank you very much for reaching out! As an Independent Advisor and fellow Microsoft user, I'm more than happy to assist you.
Make sure you checked all these steps:
- Enable Two-Factor Authentication (2FA): This adds an extra layer of security to your accounts by requiring a second form of verification.
- Run a Full Virus Scan: Ensure your PC is free from malware or viruses that could be compromising your security. (Formatting would remove anything Windows Defender couldn't find which I recommend.)
- Uninstall anything suspicious you downloaded recently.
- Sign Out of All Devices: Go to your Microsoft account settings and sign out of all devices to ensure no unauthorized access.
- Change Your Password: Update your password to something strong and unique. Avoid using the same password across multiple sites.