When I try to open firefox, the taskbar icon expands and associated sound starts to play, but the window itself doesn't appear.

I run Windows 7. I installed Adobe CS4, and when I tried to open Firefox after, got a popup window with a list of errors. I don't remember what they were specifically, but I believe they related to the Adobe flash plug-in. I restarted the computer, and subsequently got even less: the icon in the taskbar exanded, associated sound from the webpages I had tabbed started to play, but the window itself did not appear, not even in the preview. However, it closed normally when I clicked the red X in the preview window or when I right-clicked the icon and selected Close Window
== User Agent ==
Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; InfoPath.2; Media Center PC 5.0; SLCC1; .NET4.0C)

See "Hang at exit":
*http://kb.mozillazine.org/Firefox_hangs
*https://support.mozilla.com/kb/Firefox+hangs

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When I try to open firefox, the message,"Your Firefox profile cannot be loaded. It may be missing or inaccessible." How do I fix this on my pc?

I was trying to update firefox and it crashed and now....no more firefox

Hello,
you can solve this problem by going to your Applications Setting in Android ( Settings - Applications ), Select FIrefox and there you remove all datas.
it will delete the profile.
Then you'll just have to open Firefox.

Error when I try to open Firefox. Says Firefox is running in the background and cannot open. Suggests closing that window or restart system. This has happened several times recently. I reinstalled but am still getting the error. Any thoughts?

I am getting an Error when I try to open Firefox that Says Firefox is already running, but is not responding. To open a new window, you must first close the existing Firefox process, or restart your system. This has happened several times recently. I deinstalld and reinstalled but am still getting the error. Any thoughts?

This happens to me as well. However, I have a shortcut on my desktop as well as my quick start bar. When this has happened to me, I can usually log back in without restarting, by using the shortcut on the desktop rather than the usual quick start bar.
I know this sounds weird, but it has worked for me about 80% of the time.

When I try to open Firefox, I get a message that one is already open, though I'm not able to access it. How can I eliminate the invisible version?

I've been having problems with pdf and Firefox on my iMac. In the absence of being able to find an 'uninstall' function (and reinstall with a newer version), I deleted Firefox by dragging the application item to the trash and deleting. Then I downloaded a new Firefox version 5. But, when I try to open it, the above message comes up. This happens even if I shut down and restart. what do I need to do?

I have tried everything I could to fix this, but some things require actually being on Firefox, and since I cannot get on, I cannot click on the tabs to do it. I have even totally uninstalled firefox, and that has not fixed this. I still get the same message that firefox is running and I need to close it or restart (which I have also tried dozens of times). I have removed things like Java, and that has not helped either. If I cannot even get on line in firefox, how can I fix this. I am not crazy about using internet explorer, but right now, it is my only option. I even tried to start in safe mode, and the same message box pops up!

After restarting my computer firefox is deleted for Windows, when i try to open firefox a message pops up saying the program has been moved from its original location and is unable to run How do I get Firefox on my computer permanently?

After restarting my computer firefox is deleted for Windows, when i try to open firefox a message pops up saying the program has been moved from its original location and is unable to run How do I get Firefox on my computer permanently?

I have tried everything I could to fix this, but some things require actually being on Firefox, and since I cannot get on, I cannot click on the tabs to do it. I have even totally uninstalled firefox, and that has not fixed this. I still get the same message that firefox is running and I need to close it or restart (which I have also tried dozens of times). I have removed things like Java, and that has not helped either. If I cannot even get on line in firefox, how can I fix this. I am not crazy about using internet explorer, but right now, it is my only option. I even tried to start in safe mode, and the same message box pops up!

When I try to open Firefox, I get an error message that begins "The procedure entry point ?CreateDrawTargetForCairoSurface@Factory...could not be located..."

When I try to open Firefox, I get an error message that reads "The procedure entry point ?CreateDrawTargetForCairoSurface@Factory@gfx@mozilla@@SA?AV?$TemporaryRef@VDrawTarget@gfx@mozilla@@@3@PAU_cairo_surface@@ABUIntSize@23@@Z could not be located in the dynamic link library gkmedias.dll.
My only option is to click okay in the Error Message Box, but Firefox will not open then.

Do a clean reinstall and delete the Firefox program folder before reinstalling a fresh copy of Firefox.
*(32 bit Windows) C:\Program Files\Mozilla Firefox\
*(64 bit Windows) C:\Program Files (x86)\Mozilla Firefox\
*http://kb.mozillazine.org/Installation_directory
Download a fresh Firefox copy and save the file to the desktop.
*Firefox 17.0.x: http://www.mozilla.org/en-US/firefox/all.html
Uninstall your current Firefox version, if possible, to cleanup the Windows registry and settings in security software.
*Do NOT remove personal data when you uninstall your current Firefox version, because all profile folders will be removed and you will also lose your personal data like bookmarks and passwords from profiles of other Firefox versions.
Remove the Firefox program folder before installing that newly downloaded copy of the Firefox installer.
*It is important to delete the Firefox program folder to remove all the files and make sure that there are no problems with files that were leftover after uninstalling.
*http://kb.mozillazine.org/Uninstalling_Firefox
Your bookmarks and other profile data are stored in the Firefox Profile Folder and won't be affected by an uninstall and (re)install, but make sure that "remove personal data" is NOT selected when you uninstall Firefox.
*http://kb.mozillazine.org/Profile_folder_-_Firefox
*http://kb.mozillazine.org/Profile_backup
*http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Clean_reinstall
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/

When I try to open Firefox I get a message saying it is already open. However it is not open and i cannot access Firefox

When I try to open Firefox I get a message saying it is already open. However it is not open and i cannot access Firefox

See:
* http://kb.mozillazine.org/Recovering_a_missing_profile
* http://kb.mozillazine.org/Profile_in_use
* https://support.mozilla.com/kb/Firefox+is+already+running+but+is+not+responding
If it happens after you've closed Firefox and want to restart the see these:
See "Hang at exit":
*http://kb.mozillazine.org/Firefox_hangs
See "Firefox hangs when you quit it":
*https://support.mozilla.com/kb/Firefox+hangs

A program called "tudosearch" interferes with my Firefox - it always comes up when I try to open Firefox or if Firefox tries to call up another program. I can not find a way to get rid of it.

When I try to open Firefox, a window comes up saying that Firefox can not run Tudosearch. I then have to exit this window before I can go on. It also comes up when I try to go to another website while in
Firefox. I can not find the program "Tudosearch" on my computer therefore I can not remove it. Any suggestions?

I have tried everything I could to fix this, but some things require actually being on Firefox, and since I cannot get on, I cannot click on the tabs to do it. I have even totally uninstalled firefox, and that has not fixed this. I still get the same message that firefox is running and I need to close it or restart (which I have also tried dozens of times). I have removed things like Java, and that has not helped either. If I cannot even get on line in firefox, how can I fix this. I am not crazy about using internet explorer, but right now, it is my only option. I even tried to start in safe mode, and the same message box pops up!

WHen I try to open Firefox a menu box comes up asking me what I would like to use to open it with

WHen I try to open Firefox a menu box comes up asking me what I would like to use to open it with. Also when I try to use add/remove programs in the control panel or even try to open security it tells me the same thing about lost of missing files.

http://lounge.windowssecrets.com/index.php

I DOWNLOADED FIREFOX 10 ON MY WINDOWS 7 COMPUTER I REBOOTED AS TOLD BUT WHEN I TRY TO OPEN FIREFOX IT SAYS IT HAS TO BE REBOOTED; WHEN I TRY TO UNINSTALL IT SAYS IT HAS TO BE REBOOTED OVER AND OVER AGAIN in English

I DOWNLOADED FIREFOX 10 ON MY WINDOWS 7 COMPUTER I REBOOTED AS TOLD BUT WHEN I TRY TO OPEN FIREFOX IT SAYS IT HAS TO BE REBOOTED; WHEN I TRY TO UNINSTALL IT SAYS IT HAS TO BE REBOOTED OVER AND OVER AGAIN in English

Exactly what did you do to "try to transfer all of yoru photos" to the iMac?
LN

I get an error message when I try to open Firefox, telling me I cannot have multiple copies open.

I'm using a G5 Power Mac. I have several internal hard drives. I also have two copies of Firefox. I have started up using a different drive and now when I try to open Firefox, I get the message that I cannot have multiple copies of the program open at the same time, but there not...

See: http://support.mozilla.com/en-US/questions/796303
The user-agent detection was incorrectly identifying FF4 as a mobile browser, in turn redirecting to a mobile version. Install the following addon to workaround this problem until it's fixed: https://addons.mozilla.org/en-us/firefox/addon/xhtml-mobile-profile/
Barb

When I try to open firefox it comes up with an error message stating that Microsoft Visual C++ Runtime Library error abnormal termination

When I try to open firefox it comes up with an error message stating that Microsoft Visual C++ Runtime Library Runtime Error! Program...al Settings\Application Data\Mozilla Firefox\firefox.exe
abnormal termination

Start Firefox in [[Safe Mode]] to check if one of the add-ons is causing the problem (switch to the DEFAULT theme: Tools > Add-ons > Appearance/Themes).
* Don't make any changes on the Safe mode start window.
See:
* [[Troubleshooting extensions and themes]]

When I try to open Firefox, MSN pops up even after I specified Firefox as my default browser. HELP!

I downloaded a VIAO update, now can't open Firefox. When I try to open Firefox, MSN opens in HTML. I access my mail from I.E. I've also had problems with my facebook page. Ran virus scan and Malwarebytes. All my bookmarks and favorites are on Firefox.

Check that you do not run Firefox as Administrator.
Right-click the Firefox desktop shortcut and choose "Properties".
In the Compatibility tab, make sure that Privilege Level: "Run this program as Administrator" is not selected.
You also need to check the Properties of the firefox.exe program in the Firefox program directory.
If you can't make the changes then you need to start Windows Explorer as Administrator.

WhenI close firefox, and later when I try to open firefox again, it says it is already open, although it shows to be closed---don't know when it is closed or not, don't like this

When I close firefox, it closes, then later when I try to open firefox again a message opens and says firefox is already running, ---have to open task manager to close firefox before it will open again, browser may have been open for hours and didn't show to be---why does this happen, don't know when firefox closes or not------

https://support.mozilla.com/en-US/kb/Firefox+hangs#Hang_at_exit

I downloaded news Keynote version but when I try to open it the compute says I need to update it. Any ideas what could be going on?

I downloaded news Keynote version but when I try to open it the compute says I need to update it. Any ideas what could be going on?

Delete Keynote then download.

When I try to open firefox, the taskbar icon expands and associated sound starts to play, but the window itself doesn't appear.

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