What's this "Finder" icon on my Desktop and how do I get rid of it? A few days ago, this icon appeared on my desktop. It sticks near the top-right of the screen and it doesn't seem like I can reposition it. Clicking on it has no effect.



In Mission Control, the icon changes to look like this:



How do I get rid of it?

I am running macOS High Sierra 10.13.4 on a 2014 MacBook Pro.
Relaunch the Finder app to get rid of the tiny window.

Go to Apple Menu → Force Quit... or press Option + Command + Esc. In the Force Quit Applications window that appears, click on Finder and then click on Relaunch button.

It will get rid of the tiny window.