It's the end of the line for Windows 7 and 8.1, which have received their last official updates today. Users should upgrade to Windows 10.
Microsoft ends support for Windows 7 and 8.1 - gHacks Tech News
Windows 7 Dies Today: Here's What You Need to Know
Disable or Remove Unsupported OS Warning in Chrome and Edge on Windows 7 and 8.1 – AskVG
Windows 7 Is Officially Dead, So You Really Need to Upgrade
PSA: You can still activate Windows 11 using Windows 7 keys - Neowin
Microsoft issues full-screen warning about Windows 8.1 end of support
Still using Windows 7? These security tips will protect your laptop now that support is dead - CNET
Windows Update: Windows 7 - 8/8.1 Support Ends
Windows 11 Release Date, Price & New Features - Tech Advisor