[SOLUTION] Quicklook preview with spacebar not working macOS monterey

Thanks for that tip. 


For anyone playing at home, who doesn't know how to kill the process or what process to kill

  1. Open Activity Monitor (you can do this by hitting CMD + Spacebar and typing "activity" OR going to Applications -> Utililities -> Activity Monitor)

  2. In the search (magnifying glass top right) type in "quick" -- You may see a couple of options

  3. Double click the option that says "QuickLookUIService (Finder)"

  4. It will pop out a new window, and you'll want to click "Quit" in the bottom left.

  5. You'll get a scary looking message that asks "Are you sure you want to quit this process?" with two options. "Quit" and "Force Quit".

  6. Hit "Force Quit" then close the window, and then close Activity Monitor

  7. The next time you "preview" a new file with the space bar, it should open correctly.

Edit: removed the bottom text. Not sure why it added it cause it was a duplicate of what I had in the bulleted numbers.