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Just press OK. It's just a warning. You always have TimeMachine. So when the dialog "you can't undo this action" pops up, just press OK or the return key.

The full message said ( are you sure you want to remove tehe items in trash permanently? then small writing under this line said you can't undo this action)
 
is there a little lockpad icon next to the files that won't delete? If there is, you need to go to "get info" (right click on the file) and then double click the lock pad on the left hand side..
 
is there a little lockpad icon next to the files that won't delete? If there is, you need to go to "get info" (right click on the file) and then double click the lock pad on the left hand side..

also, make sure the file you are trying to delete is not in use. usually it shows a message saying this but not always.
 
facepalm.jpg
 
Oh my God the same problem i can't empty trash i did every thing but still doesn't work and there isn't any lockpad
 
Me too

I can't empty my trash either, or force empty it. All I get is the 'Trash' progress bar saying it's emptying the trash, but nothing happens - I've left it there for hours, no change.
 
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