zlacker

x64 emulation for Windows on arm Already exists. It is not based on WOW style technology. Furthermore 32 bit arm programs do exist on modern Windows on ARM, using a version of WOW64 very similar to WOW64 on x64 cpus. But they also have x86 WOW64, based on the Itanium version, that had to do binary translation.

- "C:\Program Files" <- ARM64 programs go here, as do x64 programs! - "C:\Program Files (Arm)" <- ARM32 programs go here - "C:\Program Files (x86)" <- x86 programs go here

I'm not sure how things like "Common Files" work in C:\program files, unless they made mixing arm64 dlls with x64 exes and vice versa just work. Which they probably did. I'm guessing they did not want another WOW version, since it was already bad enough to have to ship 3 different copies of certain system components, and they did not want to need to include a 4th copy, especially as ARM devices are often a bit light on storage space.