HomeWinBuzzer NewsMicrosoft Introduces New Windows 11 24H2 Update CPU Requirements

Microsoft Introduces New Windows 11 24H2 Update CPU Requirements

Windows 11 24H2 raises CPU requirements to block older processors. SSE4.2 instruction set becomes mandatory to run the new OS.


has recently enhanced the system requirements for the upcoming Windows 11 Version 24H2, indicating a deliberate move to block very old from running the latest operating system. The changes were quietly made with the release of Windows 11 preview build 26080 to the Canary channel last month. This week, Bob Pony highlighted the new requirements on X. 

Microsoft has mandated that CPUs must support the SSE4.2 instruction set to boot into , starting with Build 26080. This development underscores Microsoft's commitment to ensuring that devices running Windows 11 offer optimal security and performance levels.

Technical Specifications and Compatibility

The requirement for the SSE4.2 instruction set, introduced in Build 26080, marks a pivotal shift in Microsoft's approach to system compatibility. Previously, enthusiasts had discovered bypass methods allowing older CPUs, including those from the Intel Core 2 Duo and AMD Athlon series, to install Windows 11. However, these methods are now ineffective for systems lacking SSE4.2 support. Additionally, Microsoft has clarified the role of the PopCnt (population count) instruction, an integer instruction critical for counting the number of 1s in a binary representation, in determining system compatibility.

Impact and Implications for Users

This update has significant implications for users attempting to install Windows 11 24H2 on older hardware. Systems without the SSE4.2 instruction will automatically reboot upon reaching the boot screen phase, effectively preventing installation. Microsoft's decision to raise the CPU requirements reflects a broader strategy to align Windows 11 with contemporary hardware capabilities, enhancing the overall user experience through improved security and performance. Users are encouraged to review their system specifications to ensure compatibility with the new requirements ahead of the Windows 11 24H2 release.

Luke Jones
Luke Jones
Luke has been writing about all things tech for more than five years. He is following Microsoft closely to bring you the latest news about Windows, Office, Azure, Skype, HoloLens and all the rest of their products.