Windows 11 now forces Hypervisor-Protected Code Integrity (HVCI) — marketed as ‘Memory Integrity’, on eligible PCs via the KB5132061 update released November 10, 2026. The feature is active by default after the update, but only on systems with compatible hardware: a 64-bit CPU supporting SLAT, virtualization enabled in firmware, and Secure Boot turned on.
It does not activate on older or unsupported devices, no forced rollout to legacy hardware. No new Windows 11 version number was announced. This is a cumulative update, not a feature update. It applies globally, including to Windows 11 Pro, Home, and Enterprise editions sold in the US and India.
Microsoft states it respects existing user or IT admin choices, meaning if Memory Integrity was already disabled before KB5132061, it stays off. But if it was off and the device meets all hardware requirements, the update may now enable it automatically during reboot. That’s the change: wider default activation, not universal enforcement.




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