I couldn't update Firefox so I attempted to do an uninstall and reinstall Firefox 12.0 on Mac OS X 10.7.4 keep getting message A copy is already open.

I attempted to uninstall and reinstall Firefox get message Firefox already open

I could not open Firefox 13.0.1 when I updated to Mac OS X 10.7.4
I receive the following prompt:
'''A copy of Firefox is already open. Only one copy of Firefox can be open at this time.'''
I created a new OS user:
System Preferences> Users & Groups> click on the "+" symbol, bottom left to create new user & save profile.
Log out of current profile and log in to new OS user profile.
Open Firefox in new user to see if the application opens.
In my case the application opened. I then logged out of the new user profile and logged back into my old profile & followed the directions in the following weblink:
The following link resolved the issue:
'''http://kb.mozillazine.org/Profile_Manager#Accessing_the_Profile_Manager'''
Scroll down to: Accessing the Profile Manager > Mac OS X
Close the application completely and make sure that it is not running in the background. Assuming the program is installed in the "Applications" folder, launch Terminal ("Applications -> Utilities -> Terminal") and enter the command starting with / after the prompt in Terminal:
(Firefox) '''/Applications/Firefox.app/Contents/MacOS/firefox-bin -profilemanager'''
I then deleted the old profile and created a new profile.
I was then able to open Firefox.

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Firefox won't open pdf files; uninstalled and reinstalled Firefoxes, updated all extensions,etc. still getting error messages.

When I attempt to load a .pdf file, a window pops up reading "There is a problem with Adobe Acrobat/Reader. If it is running, please exit and try again. (4:4)"
I have tried rebooting the computer, uninstalling and reinstalling Firefox, making sure all plug-ins are updated (they are), disabling every other plug in to see if it was interfering (they weren't -- still got same message), and reinstalling adobe reader (and flash, just for good measure).

Did you try to disable hardware acceleration in Firefox?
*Tools > Options > Advanced > General > Browsing: "Use hardware acceleration when available"
*https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes
*https://hacks.mozilla.org/2010/09/hardware-acceleration/
Did you try a new profile without modifications?
*http://kb.mozillazine.org/Standard_diagnostic_-_Firefox
*https://support.mozilla.org/kb/Basic+Troubleshooting

I have downloaded the new update for Firefox 3.6 and now cannot connect to the internet. I've checked my firewall and have uninstalled and reinstalled firefox, but nothing works.

After installing the new update for Firefox 3.6, no matter what I do, I cannot connect to the internet using Firefox. I can get on the internet using my other browsers (Google Chrome and Internet Explorer), so Firefox is the only one that doesn't work. I have already checked my firewall and have added and removed Firefox from my firewall to no avail. I've also already uninstalled and reinstalled Firefox, but so far it hasn't helped.

I have already tried removing firefox from my firewall. Even when I do that, my firewall doesn't detect firefox and prompt me to add it. And when I manually add it, it still doesn't work anyways. I've already tried the link as well, but it has been unhelpful. :/
I'm not sure if it matters, but a few weeks before this, I did download Microsoft Security Essentials.

I have updated all the plugins, I have uninstalled and reinstalled firefox. I have sent numerous crash reports to you, yet it continues to crash. Can you help?

I have updated all plug-ins, uninstalled and reinstalled firefox, sent numberous crash reports, Firefox is still crashing when I open it. Can you help? Here are the crash details:
AdapterVendorID: 1002
AvailableVirtualMemory: 2041921536
BuildID: 20110615151330
CrashTime: 1309523341
Email: [email protected]
FramePoisonBase: 00000000f0de0000
FramePoisonSize: 65536
InstallTime: 1309179293
Notes: AdapterVendorID: 1002, AdapterDeviceID: 5b62, AdapterDriverVersion: 8.162.0.0

https://crash-stats.mozilla.com/report/pending/40811976-6063-4df1-b2ba-b82972110929
https://crash-stats.mozilla.com/report/pending/1f1e849a-240e-4017-bbfc-485832110929
https://crash-stats.mozilla.com/report/pending/2b3b5fc3-f3ed-47df-aa8e-293452110929
https://crash-stats.mozilla.com/report/index/bp-9156003e-2cd4-488f-a6fb-195ff2110930
https://crash-stats.mozilla.com/report/pending/7bc611b9-6d9d-4a4e-a32d-443ba2110929
https://crash-stats.mozilla.com/report/pending/477fda1b-b03b-469e-ad85-878282110929
https://crash-stats.mozilla.com/report/pending/4983f2ce-592c-4963-bcf5-319bb2110929
https://crash-stats.mozilla.com/report/index/bp-25958efc-bef3-4366-a857-1cfa92110930
https://crash-stats.mozilla.com/report/pending/881f2ee5-0b3c-4470-8590-401572110929
https://crash-stats.mozilla.com/report/pending/7f30c50f-833e-41d3-946e-e66d62110930
https://crash-stats.mozilla.com/report/index/bp-51bb0656-a417-42ff-87fb-b72942110930

How do I get rid of the blue "downloading the latest applications" bar which won't go away even after uninstalling and reinstalling Firefox?

Can't get rid of the blue "downloading the latest applications" bar that seems to be just hanging and won't go away. I uninstalled and reinstalled Firefox, but the bar is still there after 2 days. I updated something (can't remember what!) on I.E., and it had the same blue bar, but it had a box I could x out of so it went away on I.E. I don't know why the blue bar is there on Firefox, as I did the update while on I.E.
== This happened ==
Every time Firefox opened
== I updated an application while on Internet Explorer.

Annette,
#In the menu bar, at the top of the Firefox window, Go to Tools -> Add-ons -> Extensions.
# Locate ''each ''of the following extensions by name and click the disable button
#Restart Firefox as prompted and see if the undesired toolbar has been removed.
#The extensions to disable are: '''Crawler Toolbar''', '''MP3 Rocket Toolbar''', '''MSN Toolbar''', '''Search Helper Extension'''
If you don't need some / all of those toolbars, consider leaving them disabled.
You can probably remove these toolbars permanently from Start -> Control Panel -> Add/Remove Programs.

I still cannot view flash players in firefox after uninstalling and reinstalling firefox and flash multiple times. how do i fix this issue perminantly?

I can go into chrome without any issues and watch any video without any problem. the second i get into firefox nothing works. i have had this issue on and off for years. i really do not see why you cannot fix this if everybody else can. i have uninstalled and reinstalled firefox and flash player multiple times. nothing seems to work. I am truly getting really tired of this same problem year after year, i stay with firefox because you are privacy conscience and are being more so consistently. i do not know what other details to tell you other than this just keeps happening and it is making it very tough to do anything on firefox when i cannot use a simple thing such as flash player. as i said, if the other browsers can fix this i see no reason why firefox cannot year after year. i hope there is a simple fix for this problem because it has basically halted a lot of my work on the net as i will no longer use google or microsoft. thank you

Firefox does not play videos. That is the job of the plugins.
Security Issue: Update your Flash Player '''v16.0.0.305<br>https://www.adobe.com/products/flashplayer/distribution3.html'''
If you have problems with current Shockwave Flash plugin versions then check this:
* see if there are updates for your graphics drive drivers
'''https://support.mozilla.org/kb/upgrade-graphics-drivers-use-hardware-acceleration'''
* disable protected mode in the Flash plugin (Flash 11.3+ on Windows Vista and later)
'''https://forums.adobe.com/message/4468493#TemporaryWorkaround'''
* disable hardware acceleration in the Flash plugin
'''https://forums.adobe.com/thread/891337'''
See also:
* '''http://kb.mozillazine.org/Flash#Troubleshooting'''

When I try to start Firefox, I get a message that it is already running but not responding and I can't run another Firefox at the same time. I uninstalled and reinstalled. No change. Tried various other suggestions. Help!!

When I try to start Firefox, I get a message that it is already running, but not responding and that I should close it before trying to run another Firefox. But I cannot find a way to close Firefox program that is not running as far as I can see. I tried uninstalling and reinstalling Firefox, but that did not work. I've tried various other things, but no luck. I thought programs should stop when the computer is turned off, but that didn't work either.

How are you opening the Profile Manager?
*http://kb.mozillazine.org/Profile_Manager
Sounds that Firefox is still or already running.<br />
See:
*http://kb.mozillazine.org/Kill_application

My firefox has stopped working with my comcast email. It is loading fine on safari but it is no longer loading my email in a timely manner. Comcast says it is a firefox problem. They suggest I uninstall and reinstall firefox. Do I just drag everything to

My firefox has stopped working with my comcast email. It is loading fine on safari but it is no longer loading my email in a timely manner on firefox. Comcast says it is a firefox problem. They suggest I uninstall and reinstall firefox. Do I just drag everything to the trash and download a new version? in English
== URL of affected sites ==
http://
== User Agent ==
Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_4_11; en) AppleWebKit/531.22.7 (KHTML, like Gecko) Version/4.0.5 Safari/531.22.7

"Clear the Cache": Firefox > Preferences > Advanced > Network > Offline Storage (Cache): "Clear Now"
"Remove the Cookies" from sites that cause problems: Firefox > Preferences > Privacy > Cookies: "Show Cookies"
Start Firefox in [[Safe Mode]] to check if one of your add-ons is causing your problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).
See [[Troubleshooting extensions and themes]] and [[Troubleshooting plugins]]

Need to uninstall and reinstall firefox, google chrome wont allow it, tells me I go some page open and I have not

need to uninstall and reinstall firefox , It tells me to close google chome windows I get thi message when I
go to control panel programs & features high firefox then uninstrall
I have done the same process with google chrome

The Firefox uninstaller asks you to close Google Chrome?? That's strange. I assume you have closed ALL browser windows when that happens.
I should ask: why do you need to uninstall and reinstall Firefox? This usually doesn't fix problems with Firefox. Maybe check out this article: [[Reset Firefox – easily fix most problems]].

HT1926 Routine update of iTunes failed. Eventually had to uninstall and reinstall iTunes x2. Installation failed with message 'Service Apple Mobile Device failed to start. Verify that you have sufficient privileges to start system services.

Hi,
When I tried to install iTunes update this failed, then tried to uninstall and reinstall itunes twice. Failed again. Could not open iTunes. I use an HP PC. Even tried to disable Macafee firewall, still itunes failed to install. Please help!!

Followed these instructions with a few changes. (Windows 7 x64)
Uninstalled programs in the following order:
- Itunes
- Apple Application Support
- Apple Software Update
- Bonjour
- Apple Mobile Device Support (uninstall failed due to Apple Mobile Device failure)***
- Restarted System
- Redownloaded Itunes from website.
- Run installer as Administratot
- Succefully installed
***To uninstall Apple Mobile Device Support
- Right clicked on Apple Mobile Device Support, Clicked Charge (second option), Repair, Next (failed to repari)
- Right clicked the Apple Mobile Device Support in the Programs and Features window and clicked Repair (third option in drop down list). (repaired successfully)
- Uninstall successful after the repair.
Below is a guess at a quicker solution:
Looking at the uninstalls, it may be worth trying to repair the Apple Mobile Device Support through the Program and Features window before trying to uninstall everything. It may be a faster fix for the freezing service. After the repair is successful the itunes update may work.
Hope this helps.

Why does firefox keep crashing? I ran a scan and there was no spyware or malware. I uninstalled and reinstalled firefox. It doesn't happen in safe mode.

For some unknown reason firefox keeps crashing on my laptop computer. I mostly just use the internet for surfing and for emailing. It is very frustrating when I am trying to write an email and firefox crashes. I have unistalled and reinstalled firefox. I ran a McAfee scan on the computer and it has no problems with spyware or malware. It doesn't crash in safemode either. I am in safe mode now otherwise it would have crashed multiple times while getting to this page and typing this message.

If Firefox crashes frequently but stops crashing when you are in Safe Mode that is a pretty sure sign that there is something wrong with your individual setup of Firefox on your Windows 7 machine.
(The 99 others claiming to have the same problem this week probably have their own distinct and separate problems - if you are one of those 99 it may make sense to start your own questions about your problems, if you do not see suitable answers).
Many malware problems would continue even in Firefox's [[safe mode]], so the good news is that malware may not be your problem.
Note that safe mode does not disable plugins, you may wish to consider testing with your plugins disabled, just in case they are interacting with something. To temporarily disable plugins use
* '''Firefox button -> Add-ons -> |Plugins|'''
You do not list the Firefox extensions that are in use, maybe one of them is a problem. I suggest you try Firefox with half of them disabled, if that solves the problem, the troublesome add-on may be in the other half, disable them all and then try with half of the other half enabled. (If you have more than a handful of add-ons it is faster testing like that than enabling or disabling one at a time)
One very important question is how do you know Firefox is crashing ? <br/>will you please explain exactly what happens, and what if any error messages you are seeing. (If firefox freezes/hangs that may be different from Firefox or the OS crashing, and require different solutions).
On a general note the following articles may help with troubleshooting:
* [[basic troubleshooting]]
* [[troubleshooting extensions and themes]]
* [[http://kb.mozillazine.org/Standard_diagnostic_%28Firefox%29]]
and if the problem is a true crash
* see [[firefox crashes]]

After restore , uninstall, and reinstall, firefox still crashes on startup on Mac

I had about 20-30 tabs open, but that has never been an issue. Firefox was slow to load an active page, and suggested restore. I clicked restore and tried to reopen firefox. the main page came up and then crashed. I tried again and it crashed again. I opened in safe mode, and it crashed. I uninstalled from the app folder, opened opera to download and reinstall, and it still crashed. That was two days ago. I cleaned everything off the computer related to firefox in the spotlight search, and uninstalled and reinstalled. It opened for a little longer, and crashed again.
AdapterDeviceID: 0x 863
AdapterDriverVersion:
AdapterVendorID: 0x10de
Add-ons: %7B972ce4c6-7e08-4474-a285-3208198ce6fd%7D:33.1.1
BuildID: 20141113143407
CrashTime: 1416511016
EMCheckCompatibility: true
EventLoopNestingLevel: 1
FramePoisonBase: 7ffffffff0dea000
FramePoisonSize: 4096
InstallTime: 1416177811
Notes: AdapterVendorID: 0x10de, AdapterDeviceID: 0x 863GL Layers? GL Context? GL Context+ GL Layers+
ProductID: {ec8030f7-c20a-464f-9b0e-13a3a9e97384}
ProductName: Firefox
ReleaseChannel: release
SecondsSinceLastCrash: 167372
StartupTime: 1416510925
Theme: classic/1.0
Throttleable: 1
URL: about:home
Vendor: Mozilla
Version: 33.1.1
useragent_locale: en-US
This report also contains technical information about the state of the application when it crashed.

That is a problem with the "Facebook Photo Uploader" (fbplugin).
*[https://bugzilla.mozilla.org/show_bug.cgi?id=1086977 bug 1086977] [10.10] Facebook's old "Facebook Photo Uploader" (fbplugin) crashes on load on OS X Yosemite
You can check these location if you can find this plugin file:
* /Library/Internet Plug-Ins
* ~/Library/Internet Plug-Ins
*https://developer.mozilla.org/Gecko_Plugin_API_Reference/Plug-in_Basics#How_Gecko_Finds_Plug-ins
In Mac OS X v10.7 and later, the ~/Library folder is a hidden folder.
*http://kb.mozillazine.org/Show_hidden_files_and_folders#Mac_OS_X

I tried to update to 3.6.14 but it was unable to install the update & tried a complete update with "patch apply failed" as a result. it is not listed in the 'unistall program" area of my Windows Vista. how do I uninstall and reinstall Firefox?

I have no other issues withmy computer as I have used PC's for years and am quite familar with their operation. teh questions pretty much says it. After attempting to updat firefox is totally unreliable shuttign down eityher after a few seconds or a few minutes never longer. I curently have version 3.6.13 and the update for 3.6.14 will not install due to a " patch apply failure" as mentioned. I have Windows vista currently and use firefox for the online assignments I do with school, least amount of compactablity issues.

Hi NWL1,
Thanks for the question. If I understand correctly, the iPhone won't update and is stuck. I would recommend that you read this article, it may be able to help you resolve or isolate the issue.
If you can't update or restore your iPhone, iPad, or iPod touch - Apple Support
Thanks for using Apple Support Communities.
Have a great day,
Mario

I continually get a Java error. I've uninstalled and reinstalled firefox and nothing has helped. I've updated flash and Java.

I have used Firefox as my default browser for many years. I've recently started getting a Java error message. It pops up continually. I have updated flash and java. I have uninstalled and re-installed Firefox and nothing has helped. I have had to start using Chrome instead of Firefox which I don't care for but I don't have the java error with Chrome. How do I fix this problem? The error reads as follows:
Java Script Application
Error: syntax error

Your '''JavaScript''' error has nothing to do with the Java plugin . It is likely caused by an added extension (the earlier forum threads [/questions/944619] and [/questions/943088] mention disabling or updating the Social Fixer extension will resolve the problem).
You can read this article for help troubleshooting your extensions: [[Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems]]

I recently updated Adobe Flash and Adobe Shockwave, now Firefox will not load. I have uninstalled and reinstalled and still nothing. Help

Firefox never opens. It is trying but nothing seems to change, no matter how much time is allowed.

A possible cause is security software (firewall) that blocks or restricts Firefox or the plugin-container process without informing you, possibly after detecting changes (update) to the Firefox program.
Remove all rules for Firefox from the permissions list in the firewall and let your firewall ask again for permission to get full unrestricted access to internet for Firefox and the plugin-container process and the updater process.
See:
*https://support.mozilla.com/kb/Server+not+found
*https://support.mozilla.com/kb/Firewalls
See also:
*http://kb.mozillazine.org/Browser_will_not_start_up

I couldn't update Firefox so I attempted to do an uninstall and reinstall Firefox 12.0 on Mac OS X 10.7.4 keep getting message A copy is already open.

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