PopCnt is a CPU instruction that will be required to run Windows 11 starting with 24H2. But unlike TPM or Secure Boot, enthusiasts have found that the PopCnt requirement cannot be bypassed. Any attempts to bypass it lead to boot failure.
Find out if your Windows laptop or desktop will be affected by the new CPU instruction requirement in Windows 11. Learn which processors support the POPCNT instruction and if you need to upgrade your hardware.