Microsoft blocks some PCs from Windows 11 24H2 — CPU must support SSE4.2 or the OS will not boot
Windows 11 24H2 has received yet another hardware requirement for users with modded Windows 11 installs to watch out for. Bob Pony on X (Twitter) discovered that the SSE 4.2 instruction set is now required to run Windows 11 24H2, starting with build 26080. If the instruction is lacking, the OS won't boot.
If this sounds familiar to you, this new requirement is very similar to the POPCNT instruction requirement that we reported on several months ago. The only difference is that this new instruction set requires the actual SSE 4.2 instruction set. Previously only the POPCNT instruction inside of the SSE 4.2 instruction set was actually required.
⚠️ UPDATE: Since Windows 11 Build 26080, a CPU with the SSE4.2 instruction is ALSO REQUIRED TO BOOT Windows 11 Version 24H2!!Attempting to boot Build 26080+ on systems without the SSE4.2 instruction present will trigger an automatic reboot once it reaches the boot screen phase. https://t.co/iLkYuqQojZ pic.twitter.com/5RCxzoFexQApril 21, 2024
If you want to confirm that Windows 11 Version 24H2 (Build 26080 and newer) will work on your old system, I've recently updated the Windows 11 Version 24H2 Tester, it's based off Windows PE of Build 26100.If it boots, it means your system works with 24H2!https://t.co/WlbLHOmD6yApril 21, 2024
