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

Èròjà atẹ̀lélànà yii ni a ti fi pamọ́ fọ́jọ́ pípẹ́. Jọ̀wọ́ béèrè ìbéèrè titun bí o bá nílò ìrànwọ́.

Firefox quit working on my machine

  • 2 àwọn èsì
  • 1 ní ìṣòro yìí
  • 4 views
  • Èsì tí ó kẹ́hìn lọ́wọ́ Terry

bil3
bil3
more options

All of a sudden Firefox won't load. I get this message ...

"Firefox is already running, but is not responding. The old Firefox process must be closed to open a new window."

There is no other window open and I still get this message. I've uninstalled and reinstalled it and I still get this message when the program won't load.

Help!

Bil. Alvernaz bil@alvernaz.com

All of a sudden Firefox won't load. I get this message ... "Firefox is already running, but is not responding. The old Firefox process must be closed to open a new window." There is no other window open and I still get this message. I've uninstalled and reinstalled it and I still get this message when the program won't load. Help! Bil. Alvernaz bil@alvernaz.com

All Replies (2)

jonzn4SUSE
jonzn4SUSE
  • Top 10 Contributor
more options

If the message says that Firefox is still open, look at task manager. Anything there? What version of Firefox?

Ti ṣàtúnṣe nípa jonzn4SUSE

Terry
Terry
more options

You may need to delete a lock file.

https://support.mozilla.org/en-US/kb/Firefox-already-running-not-responding