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Microsoft blocks some PCs from Windows 11 24H2 — CPU must support SSE4.2 or the OS will not boot
(www.tomshardware.com)
This minute change won't make any difference to Windows 11 users today. All modern systems that support Windows 11 already have SSE 4.2. In fact, SSE4.2 has been around for nearly 20 years, and almost every processor has supported it for just as long. The only users potentially affected are tinkerers and enthusiasts who are trying to mod Windows 11 to run on incompatible hardware.