brief announcement reads, "the Steam Client will no longer run on those versions of Windows. If your PC still runs Windows 7 or 8 reasonably well, it should do the same for Windows 10, and Windows 10 will continue to receive security updates from Microsoft until at least October of 2025. If you want to upgrade all the way to Windows 11, though, you'll probably need a hardware upgrade, or you can take your chances with an unsupported install—Windows 11's more restrictive hardware requirements will keep it from running on most PCs that can run Windows 7 or Windows 8