By default, the physical layout of the Logitech Mx Keys for Mac does not match any layout defined in Windows 10.
This is quite embarssing because many physical keys are not mapped on the correct character by the operation system.
Only the Print-Screen key.
I am using the "F17" key as Capture-Region hotkey in Greenshot as a workaround.
Download the zip file attached to this gist ; extract it ; then install the layout (from setup.exe).
/!\ It's a french/AZERTY Layout.
For any customization, you can build your own layout using Microsoft Keyboard Layout Creator 1.4.
Then, change your keyboard layout (in the system's language settings) to Français - Français-MxKeys.
Next, install Microsoft PowerToys and open it.
Now, in the Keyboard manager you still have to re-map the following keys:
< to ¨@ and ¨@ to < (this will swap #@ and <> keys)
Clear to + (this will make the equal sign works in the numpad)