Says I can't open due to duplicate already running

Audacity 3 Help Forum macOS
6

  1. Ensure that Audacity isn’t actually running by rebooting the computer (ensure that the option to reopen windows is NOT selected).

  2. If you still get the error message, follow the instructions in this post to remove the lock file: https://forum.audacityteam.org/t/audacity-is-already-running-error-solved/49717/4

  3. Ensure that you have the latest version of Audacity (Audacity 2.2.2: https://www.audacityteam.org/download/mac/)