Normally, you’d run Microsoft’s PC Health Check Tool to see if your computer can handle Windows 11, but that tool is designed for Windows 10 and won’t work in Windows 8.1.

What it means is that you can no longer update from Windows 7/8/8.1 to Windows 10 or 11. Windows Ends Installation Path for Free Windows 7/8 Upgrade Microsoft's free upgrade offer for Windows 10 / ...