why does Firefox give this message when I do not have another program running "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."
Question why does Firefox give this message when I do not have another program running or another window open - "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." edit
Question
why does Firefox give this message when I do not have another program running or another window open - "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." edit
All Replies (3)
Some users reported it was caused by Java. Reinstalling Java has fixed their problem.
See also "Hang at exit":