Yep - I was confused at first - when the client couldn’t install the apps needed - I did know there was a thing years back with Windows RT but I didn’t know they had - recently - released devices running windows 10 on ARM architecture.
And a bi product of this is more and more systems shipping with Windows S.
Yes - a consumer locked down version of Windows - very much like macOS.
I just had 5 systems passing through for the client - cheap winbooks - but with Windows S - and it is next to impossible to disable without creating a Microsoft account - so I had to reinstall all 5 using the latest Windows ISO.
I read an interesting analysis piece the other day WRT Qualcomm’s Snapdragon vs. Apple’s M1.
The author bemoaned the fact that Windows has a native ARM version, but will not release it for general public use; they keep it exclusive for their Surface products; author said that MS’s x86 emulation on WinArm is pretty good.
So I’m wondering if your client’s machine is a Surface. If so, maybe you’ve found one of the items that x86 emulation just doesn’t like.