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

Mozilla Support में खोजें

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.

cannot launch firefox. error message reads " a copy of firefox is already open" though none is open.

  • 1 प्रत्युत्तर दें
  • 2
  • 19 views
  • के द्वारा अंतिम प्रतियुतर silkphoenix

mikev
mikev
more options

I cannot launch Firefox. Error message reads "Close Firefox. A copy of Firefox is already open. Only one copy of Firefox can be open at a time". But there IS NOT a copy open at all. Even after uninstall and downloading another copy, it will not let me launch. Same error message.

I cannot launch Firefox. Error message reads "Close Firefox. A copy of Firefox is already open. Only one copy of Firefox can be open at a time". But there IS NOT a copy open at all. Even after uninstall and downloading another copy, it will not let me launch. Same error message.

All Replies (1)

silkphoenix
silkphoenix
more options

Please read this article to see if it helps:


http://kb.mozillazine.org/Firefox_hangs#Hang_at_exit