Christopher Juckins

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Firefox Already Running Error

To fix "Firefox is already running, but is not responding. To open a new window, you must first close the existing Firefox process, or restart your system" do the following:

  • In $HOME: find ~/.mozilla -name "*lock"
  • Delete .parentlock files, and any other \u201c*lock\u201d files
  • The files should appear in one or more directories named with random characters
firefox_already_running_error.txt · Last modified: 2017/06/01 13:49 by juckins