Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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

تلاش سپورٹ

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.

مزید سیکھیں

اس تھریڈ کو آرکائیوکیا گیا تھا۔ اگر آپ کو مدد کی ضرورت ہو تو براہ مہربانی نیا سوال پوچھیں۔

Why won't open because I have another copy open, when I don't?

  • 1 جواب دیں
  • 20 میں یہ مسئلہ ہے
  • 14 دیکھیں
  • آخری جواب بذریعہ TonyE

AnonymousUser
AnonymousUser
more options

Firefox froze on me when I tried to save my progress in Super Mario Crossover. So I force quit it, after waiting for an hour for it to try and fix itself. I had about 20 tabs open, maybe slight more. Most were links to an academic article website, so nothing too taxing I don't think.

Well, once it closed I tried to reopen it. When I did, I was given the prompt :

"Close Firefox

A copy of Firefox is already open. Only one copy of Firefox can be open at a time."

Well, I don't have another copy open. How do I go about solving this problem.

This happened

Just once or twice

This just happened

User Agent

Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_2; en-us) AppleWebKit/531.22.7 (KHTML, like Gecko) Version/4.0.5 Safari/531.22.7

Firefox froze on me when I tried to save my progress in Super Mario Crossover. So I force quit it, after waiting for an hour for it to try and fix itself. I had about 20 tabs open, maybe slight more. Most were links to an academic article website, so nothing too taxing I don't think. Well, once it closed I tried to reopen it. When I did, I was given the prompt : "Close Firefox A copy of Firefox is already open. Only one copy of Firefox can be open at a time." Well, I don't have another copy open. How do I go about solving this problem. == This happened == Just once or twice == This just happened == == User Agent == Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_2; en-us) AppleWebKit/531.22.7 (KHTML, like Gecko) Version/4.0.5 Safari/531.22.7

تمام جوابات (1)

TonyE
TonyE
  • Moderator
more options

See "Firefox is already running but is not responding" error - How to fix