Apple says the display is Mac only, but some people have reported it working with Windows computers that have Thunderbolt ports. (Daisy-chaining two displays doesn't work.) Apple has no control over Windows software or hardware, so don't want to claim any compatibility that may later fail due the Windows changes.
The same applies to the Apple adapter. It might work but Apple won't say.
Startech sells one that does work with Windows laptops.
https://www.startech.com/Cables/thunderbolt-3-cables/thunderbolt-3-usb-c-thunder bolt-adapter~TBT3TBTADAP
It says you may need to update the laptop.
https://thunderbolttechnology.net/updates
Here is a report that mentions a Thunderbolt display working in Windows via a Thunderbolt-3 adapter.
https://superuser.com/questions/1210310/thunderbolt-display-not-recognised-with- ubuntu-16-04/1210677