Function Keys in Windows

Hi guys,
I know this has been posted before but i cant get it working:

My issue: I'm wanting the function keys in windows to work as normal (without pressing the fn key) but when I'm back on the Mac side, i want to be able to press play, pause, volume etc again without the fn key. So basically i want it to adapt to which ever window is open at the time.is this possible?

 

Hi, did you try this KB?

 

Please let us know if it doesn't work for you.

 

Thanks Maria,

I have tried the suggestion however I'm still left with having to press the Fn key on the Mac side. Am i right in thinkin that if these settings were to work, that i dont have to press the fn key at all for both windows and mac?

cheers