Guild Wars 2

I recently installed the game on a 2nd PC, and noticed that when I click on a target, whether friendly, neutral, or hostile, it has a colored outline. This target outline is missing on my 1st PC, the one I use most often to play the game, and I can’t figure out the setting to get it back.

Any help would be appreciated.

Increase your Post-Processing graphics setting, the addition of outlines is mentioned in the tool-tip for this setting.