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.

Avatar for Username

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

This thread was archived. Please ask a new question if you need help.

Frequently get the Firefox is already running message but no browser/process open.

  • 2 replies
  • 3 have this problem
  • 13 views
  • Last reply by cor-el

birdofthunder
birdofthunder
more options

Frequently get the Firefox is already running message but no browser/process open? What does this mean? Thanks!

Frequently get the Firefox is already running message but no browser/process open? What does this mean? Thanks!

All Replies (2)

FredMcD
FredMcD
more options

If you reboot the computer, do you get the same error?

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Use one of these to close Firefox if you are currently doing that by clicking the close X on the Firefox title bar.

  • "3-bar" menu button -> Exit (Power button)
  • Windows: File -> Exit
  • Mac: Firefox -> Quit Firefox
  • Linux: File -> Quit

See also: