OK, so you really ticked this option under the "View" menu in Device Manager:
View (menu) choose "Show Hidden Devices"
...and then you actually didn't see the hidden device "Microsoft WiFi Direct Virtual Adapter" (or anyone else) ...???
That's really weird. I have now 4 different 8.1 devices and all of them have that as a hidden device. (Dell, Microsoft Surface, Sony Vaio, and Gateway). I also just checked my Windows 7 machine at home and it has something similar called Microsoft Virtual Wifi Miniport Adapter which is a hidden device that you don't see unless you click "View: Show hidden devices".
TSM