When I close Firefox I cannot reopen it without restarting my computer.
If I try to re-open Firefox I get the message already open close or restart your computer.
تمام جوابات (1)
Try to Wait a bit longer before reopening Firefox to give Firefox more time to close completely.
Use "Firefox/File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit") to close Firefox if you are currently doing that by clicking the close X on the title bar.
See "Hang at exit":
See "Firefox hangs when you quit it":