MacOS – Can’t open or quit Finder

findermacbook promacosmojave

I'm trying to open Finder, but every time I try I get this error message:

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I've tried restarting my Macbook Pro as well as doing a "Relaunch" from "Force Quit Applications":

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However, nothing happens when I try to force-quit the application, so I'm 'stuck' with a non-responsive Finder. How can I fix this?

Best Answer

Try this in a terminal window:

killall Finder

or even

killall -9 Finder