Support for Windows 10 has now ended as of October 14. Here's everything you need to know about how your PC is at risk, and what you can do to remain secure.

Official Windows 10 support is ending very soon, but if you aren't ready to upgrade, you can still enroll for security updates for another year.

Your Windows 10 product key serves as proof that you actually own Windows 10, and might need to be entered when you reinstall or upgrade Windows.