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

Can't Open Firefox

  • 3 respostas
  • 1 has this problem
  • 2 views
  • Last reply by cor-el

more options

I'm able to use firefox at first when I search something in the internet then I close the browser right after I finished. But, when I open it again to open my email. I can't open it anymore. It say "Firefox is still running but is not responding. To open a new window, you must first close the existing Firefox process, or restart your system." I'm starting to experience that problem when I updated my Firefox in version 24.0.

How can I close it if my firefox icon is not highlight sign that it is open?

I'm able to use firefox at first when I search something in the internet then I close the browser right after I finished. But, when I open it again to open my email. I can't open it anymore. It say "Firefox is still running but is not responding. To open a new window, you must first close the existing Firefox process, or restart your system." I'm starting to experience that problem when I updated my Firefox in version 24.0. How can I close it if my firefox icon is not highlight sign that it is open?

All Replies (3)

more options

It is better to use "Firefox > Exit" (Windows: Firefox/File > Exit; Mac: Firefox > Quit Firefox; Linux: Firefox/File > Quit) to close Firefox if you are currently doing that by clicking the close X on the Firefox title bar.

See also:

more options

I opened the links that you have provide but it only apply for windows 7 and below even their kill application step. I'm using windows 8.1 Preview.

more options

Those steps should work in Windows 8 as well.
You can check in the Task manger if there are still running Firefox processes and end them when present.

Does it have any effect if you use Exit in the Firefox menu drop-down list or in the File menu if the menu bar is visible?