Windows 10 task bar won't go away in Sims 4

Are you playing in windowed mode? 

When you say you've tried everything - what exactly have you tried?

@mharyuan

@Coley666is right. In Game Options\Graphics, change "Display Type" to either Fulscreen or Windowed Fullscreen. Either one will remove the task bar from showing.

If you don't have a tendency to switch tasks while playing the game, you'll get better gameplay using "Fullscreen" and not either "Windowed" setting.

ThePsycho
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Def accept as solution.thanks for the info