Or ctrl key and press d or hold the fn function key down while.
Magic keyboard windows function keys.
Click on the apple icon in the top left corner of your screen and then click on system preferences.
Press the right command and or right option key with actual key.
If your fn keys by default controlled media e g volume playback etc turning on the fn key lock will make it so that the fn keys now execute the secondary function that f1 f12 do e g.
The various models such as the magic keyboard.
Within system preferences click on keyboard.
On the following screen ensure that you do not have a check mark in the box that says use f1 f2 etc.
Quick video on how to use an apple keyboard on windows 10 and still use the apple volume function keys.
Is the menu or applications key on windows that allows you to launch.
Select or deselect use all f1 f2 etc.
The right command option keys act like the alt gr key on windows keyboards.
To turn fn key lock off repeat the process you followed to turn it on.
Install and activate the belonging magic keyboard layout for your language.
If a user account control dialog appears click yes.
Keys as standard function keys.
F1 opens help in an app or f12 opens the web console in your browser.