Can't access firefox. message states: a copy of firefox is already open. Only one copy of firefox can be open at a time

I am a Mac user and can no longer use firefox as a browser. The repeated message is that a copy of firefox is already open, but I am not using firefox now but rather Safari.

Back up all data if you haven’t already done so. Before proceeding, you must be sure you can restore your system to the state it’s in now.
Quit the application if it's running.
Open the Library folder in your home folder as follows:
☞ If running Mac OS X 10.7 or later, hold down the option key and select Go ▹ Library from the Finder menu bar.
☞ If running an older version of Mac OS X, select Go ▹ Go to Folder… from the Finder menu bar and enter “~/Library” (without the quotes) in the text box that opens.
From the Library folder, delete the following item(s), if they exist:
Caches/Firefox
Caches/org.mozilla.firefox
Caches/org.mozilla.plugincontainer
and move the following item(s) to the Desktop:
Application Support/Firefox
Application Support/Mozilla
Preferences/org.mozilla.crashreporter.plist
Preferences/org.mozilla.firefox.plist
Preferences/org.mozilla.plugincontainer.plist
Launch the application and test. If you still have the issue, quit the application and put the item(s) on the Desktop back where they came from and post again. Otherwise, delete the items on the Desktop.

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Only one computer/device connected to wireless interenet at a time, how can I change this?

I had this set up a couple years ago to where only one computer could be connected to my wireless internet. However, now that I have 2 laptops, an xbox and a Wii, I would like to change this to where more than one computer or device can be connected to my internet at a time. Anyone got a clue how to change this?
I have a WRT54G wireless router.
Thanks.

Have you tried to connect the devices? If so, is the router allowing you to? If not, are you getting any error messages?
By default, if you setup the router before, anyone should be able to connect to it without a problem.

My time capsule will allow only one machine to connect to the internet at a time. Connection sharing is "off" on the Airport Utility. When I try to share an IP address I get the message that "DHCP range that I entered conflicts with the WAN IP address" I

Suddenly, my time capsule will not allow more than one computer to connect to the internet at a time. On the Airport Utility on the internet tab, Connection Sharing is "Off (Bridge Mode)" When I try to change it to sharing an IP address, I get two messages that the beginning and ending DHCP addresses that the DHCP addresses I've entered conflict with the WAN address of my Apple wireless device."
Any ideas?
Thanks

I use a DSL to connect to the internet. The modem is a Westell C90-810030-06. Two things happened in connection with the fail. I upgraded the firmware in both my Time Capsule (connected to the DSL) and the Airport Extreme (connected to my printer--used to extend the network). I also upgraded my Colof Nook to the Android Faux Tablet version. I can't imagine that that is creating some sort of mismatch.
I have now downgraded the firmware on the Time Capsule to 7.4.1 which is what I had before. Fortunately, I found the trick to downloading the older airport utility to find the older firmware. All the older versions disappeared from my computers.
I still have the same problem. Wifi works fine. If a second device connects to the wifi, then it works fine, but the first no longer has a connection.
And my Airport Extreme is not working at all. It cannot be seen by the computer. I tried resetting it. I'm going to connect it by ethernet and downgrade the firmware on it.
I appreciate any help. This is so frustrating.

OS 5.0, Storm: URLs in SMS messages stop being clickable after the thread is opened the first time

I'm running 5.0.0.328 on a VZW Storm 9530.
After upgrading, I noticed that URLs in SMS messages and e-mails stop being clickable after a certain time. I'm not sure that this is so much a time issue as it is one with just getting X number of messages then breaking, but it works like this:
Battery Pull occurs
Storm reboots
Look at SMS messages, URLs can be clicked, opening them in the Browser
go on about my day
Get more SMS/eMail messages
Look at SMS messages, URLs can NOT be clicked. Have to be copied/pasted into browser to view.
Battery Pull occurs
Storm Reboots
I can again click on URLs and open them in browser
And that's how it goes. Initially, after a battery pull, the URLs in various SMS are underlined. Clicking them opens them in the browser. OR, I can touch them and hit the BB button, and select Open Link in Browser from the menu.
After some more testing, the problem appears to be related to the threading of SMS messages.
My test case is twitter. ALL my twitter messages are thrown into a single thread (I do NOT want this, by the way, I want individual SMS messages, NOT threads of them). SO let's say, for example, I have 25 SMS messages in the twitter thread. Immediately after the battery pull, I can open the thread, and after a moment, all URLs are underlined, clickable, and if I touch/hold for a second, highlighted and can be opened via the BB menu.
After exiting that thread to do other things, and then coming back to that thread, I have found that OLD SMS messages in the thread (the original 25 that were there when I did the battery pull) are still underlined, clickable, and so forth. However, any NEW messages added to the thread after I opened it the first time, are NOT clickable, NOT underlined.
My theory at this point is that the code that parses the SMS messages in a thread and then underlines the URLs making them usable, only runs that first time, and either does not run, or fails to run, on subsequent openings of that SMS thread.
Thus, if the messages were NOT threaded, then the code would run when each individual SMS was opened, eliminating this problem. OR, having that code run EVERY TIME a thread is viewed, to ensure it does the underlining/grabbing of URLs for new SMS messages.

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Do you have a question?
If so, let 'er rip.
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HT1386 I have been syncing my IPad to only one PC computer successfully for over a year. Now when I try to sync I get the message that the ipad is synced with another computer and can be synced with only one. How can I correct this?

Although I have synced my ipad to only one PC computer I now get the message that it is synced to another computer and only one computer sync is permitted. I have lots of apps on the ipad and do not want to loose everything by starting fresh with the ipad. How can I get the ipad to again accept my computer and sync successfully?

Plawexki wrote:
... do you know if the contacts, photos, messages etc will be wiped?
Yes... Everything will be Wiped and Replaced with what is currently on Your Mac.
SYNCING with iTunes
See here > http://support.apple.com/kb/HT1386
From Here > http://www.apple.com/support/iphone/syncing/
You may find this information of interest...
Have a read here...
https://discussions.apple.com/message/18409815?ac_cid=ha
And See Here...
How to Use Multiple iDevices with One Computer

Can i just delete OLD time machine backups?

I went to the BAckup directory because I keep getting this annoying window that time machine has run out of space.....It is 1 TB and my HD is 500gb and i am using about 400gb....roughly.
i think I see 2 backup ups from June 9th.
How can I change the setting on length of time TM keeps backups?

vdotmatrix wrote:
How can I change the setting on length of time TM keeps backups?
There is no such option. Time Machine keeps backups for as long as there's room on the backup disk, then deletes the oldest one(s) to make room for new ones.
It is 1 TB and my HD is 500gb and i am using about 400gb....roughly.
Which message are you getting? There's one that's just letting you know it deleted some old backups:
That's not really a problem -- it just means Time Machine is doing it's job of cleaning up old backups for you, so there's room for new ones. If you don't want to see it anymore, just click the box on the message.
But if the backups are actually failing, with a message like this;
Then something doesn't add up -- if you're backing-up 400 GB to a 1 TB drive, there should always be enough room, unless you have (lots of) other stuff on the same drive.
See #C4 in Time Machine - Troubleshooting for details on those messages.
If those June backups are really the only ones left, it sounds like your backups have been failing for a long time (or you haven't done any). If so, your best bet is probably to erase the backups and let Time Machine start fresh. Then keep an eye on it -- if backups fail, or don't complete, investigate sooner rather than later. If you get an error message, see Time Machine - Troubleshooting.
If you're backing-up to an external HD, just erase it with Disk Utility (see #2 in Using Disk Utility if you don't know how to do that).
If you're backing-up to a Time Capsule, erase it via Airport Utility (per the green box in Using Time Machine with a Time Capsule.
If you do have other data on the drive, roughly how much is there, and what sort of data is it?

I updated to Firefox 4.0.1 this morning. Norton 5.5 is now disabled and the message states that it is incompatible with 4.0.1. I need the Norton features enabled. Can I go back to 4.0 until this is rersolved?

I updated to Firefox 4.0.1 this morning. Norton 5.5 is now disabled and the message states that it is incompatible with 4.0.1. I need the Norton features enabled. Can I go back to 4.0 until this is resolved?

Please do a Live Update to the Norton product.
They have provided an important update to Firefox 4.0.1.

I have tried uninstalling and reinstalling Firefox several times. Every time I try to open Firefox I get an error message saying "Close Firefox"," A copy of Firefox is already open. Only one copy of Firefox can be open at a time."

I uninstall Firefox, then reinstall Firefox, try to open Firefox, and get an error message in a popup box saying,
"Close Firefox"
"A copy of Firefox is already open. Only one copy of Firefox can be open at a time."

Create a new profile as a test to check if your current profile is causing the problems.
See "Basic Troubleshooting: Make a new profile":
*https://support.mozilla.com/kb/Basic+Troubleshooting#w_8-make-a-new-profile
If that new profile works then you can transfer some files from the old profile to that new profile, but be careful not to copy corrupted files.
See:
*http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

I cant access firefox, everytime i try i get that windows can't find the file, i tried redownloading it but it still gave me the same message?

i cant access firefox, everytime i try i get that windows can't find the file, i tried downloading it again but it still gave me the same message. the problem has nothign to do with my internet because it wonks on internet explorer and everythign is fine, my computer just can't access firefox for some reason. i tried uninstallign ti adn then installing it again, but that didnt work, i tried installing a different version and it still didnt work.
okay the exact message is" Windows cannot find 'C:\Program Files\Mozilla Forefox 4.0 Beta 1\firefox.exe'. make sure you typed the name correctly, and then try again. To search for a file, click the Start button, and then click Search.
Nothing happens after i install is the "Launch Firefox now" checkbox set, the same message comes up.
i usually start firefox from the shortcut i have on my desktop but when this happened i thought that the shortcut is the problem, but i went to the Mozilla firefox folder and tried it from there, but it didnt work. i also tried downloading different versions of firefox but that didnt work either.

can you tell me the solution to "windows cant find firefox" error. thanks.

When I click on the icon to open Firefox I get an error message " A copy of Firefox is already open, only one copy of Firefox can be open at a time".

I have tried to download and run Firefox on my MAC OS 10.6.7 several times and have run into this error message every time:
"A copy of Firefox is already open. Only one copy of Firefox can be open at a time". A search through the computer does not fine another copy of Firefox and there is no window open or evidence of the program open.
When I got this computer a year ago I copied the hard drive from the old computer onto the new and the old computer had a copy of Firefox on it and the program worked on that computer. It would not run on the new computer so I thought maybe it was due to the Intel chip so I deleted the program and downloaded the newest version at the time. This is when I started getting the error message and subsequent attempts have yielded the same results.
Can you be of help?

See:
* https://support.mozilla.com/kb/Firefox+is+already+running+but+is+not+responding

Why, when I open Firefox 4, do I keep having Firefox 3 pop up continually and having the error message "A copy of Firefox is already open. Only one copy of Firefox can be open at a time." ?

Every time that I try to use Firefox 4, Firefox 3 pops up on the Dock and tries to start up. I get the error message "A copy of Firefox is already open. Only one copy of Firefox can be open at a time." I click OK and the message goes away. Then it happens again. And again. It doesn't stop until I quit Firefox 4. I've tried creating a new profile (and deleting my old one) and deleting the .parentlock and the profile.ini file, but nothing works. Help me please!

See:
* https://support.mozilla.com/kb/Firefox+is+already+running+but+is+not+responding

When I try to open Firefox 3.6 (Mac) by clicking on the icon, I get this message: "Close Firefox: A copy of Firefox is already open. Only one copy of Firefox can be open at a time." I've removed older versions and restarted, but still get this message. Wh

I've just downloaded Firefox 3.6 (Mac). When I attempt to open, this message pops up: "Close Firefox: A copy of Firefox is already open. Only one copy of Firefox can be open at a time." I've removed older versions and restarted, but still get this message. What's going on?
== This happened ==
Every time Firefox opened
== after I downloaded the latest version. ==
== User Agent ==
Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_3; en-us) AppleWebKit/531.22.7 (KHTML, like Gecko) Version/4.0.5 Safari/531.22.7

You might find your solution in [http://kb.mozillazine.org/Profile_in_use this article].

When I try and launch Firefox, I get this error message A copy of Firefox is already open. Only one copy of Firefox can be open at a time." and have tried all of the trouble shooting tips, can you help?

When I try and launch Firefox, I get this error message >A copy of Firefox is already open. Only one copy of Firefox can be open at a time." and have tried all of the trouble shooting tips, can you help? I thought if I were to completely uninstall and re install it might help, but I cannot seem to find instructions to do this....

See [[Firefox is already running but is not responding]], the image shown in that article is the Windows equivalent of the error message that you are receiving, but the information relates to the Mac.

A copy of Firefox is already open. Only one copy of Firefox can be open at a time. I GET THIS MESSAGE - BUT FIREFOX APPEARS NOT TO BE OPEN.????????

i have already deleted (trashed) all versions of firefox, and then re-downloaded the new Firefox, and when i try to open it, i get the message, "A copy of Firefox is already open. Only one copy of Firefox can be open at a time."

Make sure you allow Firefox a few minutes to close down,and always use the menu options to close Firefox (Not just closing a window or killing the process).
Just for now Look for Firefox processes or plugin container that are still running and kill them before trying again.
* see [["Firefox is already running but is not responding" error message - How to fix it]]
** and also [[Firefox hangs or is not responding - How to fix]] <br />& http://kb.mozillazine.org/Firefox_hangs#Multiple_sessionstore.js_files

A copy of Firefox is already open. Only one copy of Firefox can be open at a time. I cannot find the open one. was having some problems. deleted and trying to re-install. I get this message each time

Some web pages did not load correctly. (on Imac). Deleted Firefox and moved Profile to another drive to backup.
Downloaded new Firefox. When I try to install, I keep getting this message-"A copy of Firefox is already open. Only one copy of Firefox can be open at a time."
I went in and searched for all occurrences of Firefox or Mozilla and deleted.
It will still not load.

I cannot get Firefox to run now. I backed up my Profile to another drive. Cannot create a new one as Firefox will not run. It says there is another copy running. However, I have deleted all Firefox and Mozilla files and downloaded new. When I try to run it, I get the message to close Firefox as two cannot run at once.
I did create a new Mac account logon and can run Firefox there, so something in the other account is showing Firefox is running.
I also checked in ACTIVITY MONITOR and in SETUP and there is no Firefox or Mozilla running.
So, where can this bug be hiding????

Can't access firefox. message states: a copy of firefox is already open. Only one copy of firefox can be open at a time

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