Apple - Mac OSX not automatically remapping windows key to cmd

I fixed the issue!

Turns out that on this keyboard, doing fn + f12 actually disables the windows key. This was turned on by default. This is why nothing was working when I would press the windows key. I pressed fn + f12 again and now everything works :| weeks of frustration all due to me not looking at my keyboard layout :(

I had a slightly different experience than the others did here. My Windows key wasn't locked -- it simply wasn't assigned in the keyboard's memory. In order to get this to work correctly, I had to download the software for the CM Storm Trigger Z (which should function similar to your Quickfire) on a Windows machine, assign the correct key to act as the Windows key, and then it worked when returning the keyboard to my Mac.

You can find the company's instructions on downloading the software and getting this fixed here, by clicking "Download" and then "Windows Key Setup": http://www.coolermaster.com/peripheral/keyboards/triggerz/

There's one other thing that has to happen before your keyboard will work on OSX correctly: you have to select the keyboard's profile by pressing the storm button and the number 1 at the same time. This activates the profile for which you've programmed the storm key to function as the Super key (Windows key / CMD key).

In my case with Logitech G413 the windows key also stopped working. Fn+F12 didn't help but plain old unplugging the USB cable and plugging back helped.