Fix for Black Screen Game Capture in OBS Studio

A common problem which I've seen on many forums and subreddits is that a game is not showing up in OBS after adding the game capture window as a source.  Instead of being able to see the game screen in OBS, they are greeted with a giant black box.

The fix for this? 
Open OBS as an administrator.

How does one do this?
Hold Shift -> Right Click the OBS icon -> Choose the option "Run as administrator".

This has fixed the black box error which I've encountered in both Star Trek Online and Darkest Dungeon.  I'm sure there are other games which fall victim to this problem.