Officially, Windows 11 has higher system requirements than Windows 10. But to date, once you’ve bypassed those requirement checks, there have been few consequences to running Windows 11 on old hardware. Unsupported or not, Windows 11 would run on pretty much any 64-bit PC that could boot Windows 10—we’ve run it on PCs as old as a Windows XP-era Core 2 Duo desktop.
That’s apparently changing a bit in Windows 11’s 24H2 update, which Microsoft began testing earlier this month. According to posts from a user named Bob Pony on X, formerly Twitter, the latest Windows 11 builds refuse to boot on older processors that don’t support a relatively obscure instruction called “POPCNT.”
