I just updated to iTunes 12, and I when I open it, nothing happens. The icon on the Dock doesn't even bounce. When I start it in the Terminal, nothing happens either, no messages. When I open it with sudo, the application does show up in the dock with a dot, but no messages or UI.

I don't think it has anything to do with my user profile since it does not work in sudo either, it does come closer to work though, but it's a very very small difference. I have rebooted the computer, obviously.

I also tried reinstalling it, it's been stuck on "moving files to their right places" with 1 minute left for 7 hours.

  • Did you start the app bundle or the executable in there? If the app, then execute the executable in appname.app/Contents/MacOs – TheBro21 Jan 4 '16 at 19:47
  • 1
    @TheBro21 the executable. – DisplayName Jan 4 '16 at 19:48
  • Could there be a log in the Console.app with iTunes, the last time it did work? It should be under Diagnostic and Usage Info*, in User Diag reports. Also look in Files > /Library/logs > Crash Reporter and Diag reports – TheBro21 Jan 4 '16 at 19:51

"1 minute left" is the sign for "I'm doing your user stuff right now, I have no clue when it will finish, 'cos that depends on how much stuff you've got" … but if you've force-quit it, you broke it & will have to start over.

There is similar confusion at OS updates, the "doing your user stuff" part apparently cannot be predicted anywhere near as well as the initial processing/update, so you get a "1 minute" that can take hours. Patience is a virtue; in fact patience should be directly proportional to the time since your last solid backup.

I'd clear the saved state for starters & see how that goes …
~/Library/Saved Application State/com.apple.iTunes.savedState

  • Clearing the saved state also helps if iTunes stubbornly refuses to open any window on startup. – nohillside Jan 6 '18 at 13:13
  • Clearing saved state is my favourite 'first fix' attempt for anything that's being a bit awkward - because it loses little yet potentially gains much :) – Tetsujin Jan 6 '18 at 13:18

Try opening in Safe Mode.

Command + Option keys when launching iTunes

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