This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

When I close Firefox I cannot reopen it without restarting my computer.

  • 1 reply
  • 2 have this problem
  • 2 views
  • Last reply by cor-el

more options

If I try to re-open Firefox I get the message already open close or restart your computer.

If I try to re-open Firefox I get the message already open close or restart your computer.

All Replies (1)

more options

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":