Follow the steps to shut it down properly and get it removed for good.ġ. Open the Finder and select 'Applications' from the Favorites list.Ģ. When you delete an app in Finder, one possible scenario is that there is a message on the screen reading 'The item 'app name' can't be moved to the trash because it's open.' This occurs because the app is still processing in the background, and you haven't closed it thoroughly. Dragging and dropping the app to the Trash only removes the shortcut. If you've mistakenly uninstalled an app or deleted a crucial file and emptied it from Trash, don't despair, you still have a great chance to recover Mac deleted file from Trash. Delete app or file by mistake? Look here! To completely uninstall a program, the necessary thing to do is emptying the trash can or Bin.