Error When Starting Netplay: Failed to listen is another instance of netplay running?

[xojake]

(11-08-2015, 08:22 AM)OatmealDome Wrote: Is any program on your computer running on the netplay ports? Did you try running Dolphin as administrator?

I checked to see if those ports were occupied by using a site in which it said it was closed. Yes I've tried running Dolphin as administrator multiple times