A Copy of Firefox is already open. Only one copy of Firefox can be open at a time
I have shut down my mac for half a dozen times in response to the warning -- A Copy of Firefox is already open. Only one copy of Firefox can be open at a time -- that comes up each time I attempt to launch the browser. I have tried out the solutions suggested for previous users (on the Mozilla Forum) who were experiencing similar issues, but I can't even see Firefox on my Mac's Activity Monitor. What's going on?
I started experiencing this problem out of the blue on a networked computer two days ago (on Tuesday December 6). I have been using computers on this network for more than a year and it's only now that I have started experiencing this problem. Furthermore, I have been a Firefox user for more than four years and never encountered this issue. It's frustrating considering I have come to rely on Firefox as my browser of choice.
Other than this background I don't know what else to tell you by way of details.
Hi Swarnava,
Thanks for your prompt response. Intriguingly, when I logged on to my Mac (it's on a university network) this morning and launched Firefox it opened without a problem. If the issue resurfaces, I will try out the solutions you posted. Judging from the experiences of users who successfully trouble-shot their issues, apparently, Madakkadam's solution would be most helpful.
All the best.
Vukoni
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Sounds like you have a plan.
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So what am I missing here?
Last edited by tylerpnn (2014-03-29 04:54:00)As always happens when I have issues, I try to solve it myself for hours on end, finally swallow my pride and post on the forums, and then find the solution on my own an hour later.
Found the solution here: https://bbs.archlinux.org/viewtopic.php … 003#p70003
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pcm.!default {
type plug
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pcm.dsp0 {
type plug
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slave {
pcm "hw:0,0"
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period_size 1024
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Last edited by tylerpnn (2014-03-29 06:01:42) -
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Thank youVista?
Ooh boy.
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Can the keychain from my phone and Apple ID link to 2 other different phones and Apple ID's and 1 new ipod and different id? Both daughters and wife use my credit card on their accounts.
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Message was edited by: Michael Pardee -
and i can't transfer my purchases for 86 days. surely we can use two seperate accounts on the one pc. the only other pc's we have are ipads and we cant sync our ipods using them. thanks in advance
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Welcome to the Apple Support Communities
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