Security updates after the end of support
https://www.bleepingcomputer.com/news/microsoft/windows-7-reaches-end-of-life-tomorrow-what-you-need-to-know/
It's the end of an era: Windows 7 will reach end of support tomorrow, on January 14, a decade after its initial release, with Microsoft to no longer provide users with software updates and security updates or fixes.
"The specific end of support day for Windows 7 will be January 14, 2020," Microsoft says. "After that, technical assistance and software updates from Windows Update that help protect your PC will no longer be available for the product.