Can't kill Preview app [duplicate]

I have strange problem, my Preview app is not responding and can't kill it.

leo-mac:~ leo$ sudo killall Preview
No matching processes were found

Force Quit button also doesn't give any result.

ps (and Activity Monitor) is empty:

leo-mac:~ leo$ ps -ax | grep -i preview
24793 ttys000    0:00.00 grep -i preview

It's not a zombie because next command is also empty:

ps aux | awk '"[Zz]" ~ $8 { printf("%s, PID = %d\n", $8, $2); }'

I really can't understand what happened. Any ideas?

Solution 1:

I had the same problem. Workaround:

sudo killall launchservicesd
sudo killall Dock

Solution 2:

It could be an issue with one of the files preview is attempting to open.

Go to

~/Library/Saved Application State/

Remove the com.Apple.Preview folder. This should resolve the issue when attempting to launch Preview after quitting the application from the above answer or shutting down.