[matja]

Windows 11 24H2 added a dependency on the POPCNT instruction, causing CPUs that don't have it - which were otherwise fine, to fail to even boot Windows.

What will be the next instruction/ISA extension that is only supported since Intel 11th Gen that there will be a hard dependency on? Any bets?

[jama211]

And they fixed it. A bug like that is a seperate category of problem entirely.