Suddenly, Firefox will not launch. When I try with the Task Manager up, it never appears on the list of applications.

On a desktop PC running Windows XE, FF will not launch. Has been working very well since we installed FF two weeks ago and made it our default browser. IE launches normally allowing me to post this question. On my laptop, on the same wireless connection, FF works fine. I have rebooted several times. Everything seems normal except for FF. I have run PC Doctor and have fixed all problems that came up. McAfee finds no problems.

Update: After a very long time, perhaps 15 minutes or more, the FF screen comes up blank with the "loading..." message on the first tab. Also, because I tried several times to launch FF, more such screens came up with the same result. My home page never loads. If I stop page loading and try another web site I get the same result.

Similar Messages

Firefox will not launch when I click the icon, it worked okay previously

A week ago firefox began taking a long time to launch sometimes requireing reclicking the icon.
Now it will not launch at all.
I get no error messages, nothing happens when I click the icon.
HELP

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.org/kb/Server+not+found
*https://support.mozilla.org/kb/Firewalls
See also:
*http://kb.mozillazine.org/Browser_will_not_start_up

Firefox will not open, when I try to unstill it says firefox must first close to proceed, I can't open or uninstall

This happened after a windows automatic update

In Task Manager did you look for Firefox under "Processes" as well as "Applications"(Programs)?

Firefox does not "close" when closed under Windows 7; Task Manager must be used to "End Process." How do I close Firefox and reopen it without getting a "Still Running" error message?

Even though Firefox has been updated multiple times (currently using Ver. 3.6.13) since I started using Windows 7, I am still unable to totally close it from the toolbar or taskbar. Firefox does closeout on the screen but apparently continues to run in the background. If I open Firefox at a later time, I get an error message stating that Firefox is still running. I then have to go Task Manager to "End Process." Electing to do so allows me to restart Firefox. I never had this problem with Firefox when using Windows XP and I never have this problem with any other software under Windows 7.

https://support.mozilla.com/en-US/kb/Firefox%20hangs#w_hang-at-exit

Firefox will not launch - when i double-click the icon it does nothing. But when I go to the task manager in Windows it shows that Firefox is an active process.

**Running Windows Vista 6.0 SP1 with Firefox 6.0.2

See:
*http://kb.mozillazine.org/Browser_will_not_start_up
Start Firefox in [[Safe Mode]] to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
*Don't make any changes on the Safe mode start window.
*https://support.mozilla.com/kb/Safe+Mode
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

Firefox will not load Southwest Airlines site. It just says done and nothing appears in the window. Safari works

I don't know what else to provide. The question speaks for itself

Clear the cache and the cookies from sites that cause problems.
"Clear the Cache":
* Edit > Preferences > Advanced > Network > Offline Storage (Cache): "Clear Now"
"Remove Cookies" from sites causing problems:
* Edit > Preferences > Privacy > Cookies: "Show Cookies"

Firefox is freezing. When I close Firefox, and try to re-start it, it will not open. I need to access Task Manager, where I find Firefox still running. I close Firefox in Task Manager & can re-start Firefox.

Firefox is freezing in the middle of a browsing session. When I close Firefox, and try to re-start it, it will not open. I need to access Task Manager, where I find Firefox to still be running. Once I close Firefox in Task Manager, I can re-start Firefox. This can happen several times in the space of a few hours? I'm running Vista Home premium with Firefox 3.6.16, and this problem has only started in the last 4 weeks. Can Anyone Help? Core 2 Duo E7300 with 4GB RAM.

Sounds like it is hanging when you exit and later try to restart Firefox.
* How to stop the running Firefox process
** In Task Manager, does firefox.exe show in the '''Processes''' tab?
** See: http://kb.mozillazine.org/Kill_application
**Windows 7 users: http://www.techrepublic.com/blog/window-on-windows/reap-the-benefits-of-windows-7s-task-manager/2576
* What may cause Firefox to hang at exit
**Windows 7 Task Manager: http://www.techrepublic.com/blog/window-on-windows/reap-the-benefits-of-windows-7s-task-manager/2576
** http://support.mozilla.com/en-US/kb/Firefox+hangs
** http://kb.mozillazine.org/Firefox_hangs
** https://support.mozilla.com/en-US/kb/Firefox+is+already+running+but+is+not+responding
* You may need to try Firefox Safe Mode
** You may need to use '''Safe Mode''' to locate the problem: ***See: http://kb.mozillazine.org/Safe_Mode
***Firefox 4 users, hold the Shift key while clicking the Firefox 4 desktop icon to enter Safe Mode.
***Firefox Safe Mode is a diagnostic mode that disables Extensions and some other features of Firefox.
****In Firefox 4, Safe Mode also disables Plugins and Hardware Acceleration.
****If you are using a theme, switch to the DEFAULT theme: Tools > Add-ons > Themes '''before''' starting Safe Mode (In Firefox 4, Tools > Add-ons > Appearance). See: http://support.mozilla.com/en-US/kb/Using%20themes%20with%20Firefox#w_managing-themes-and-personas
****When entering Safe Mode, do not check any items on the entry window, just click "Continue in Safe Mode".
****Test to see if the problem you are experiencing is corrected.
*** If the problem does not occur in Safe-mode then disable all of your Extensions and Plug-ins and then try to find which is causing it
***#by enabling '''one at a time''' until the problem reappears.
***#You can also enable a few at a time (3-5), keeping track of what you just re-enabled to see if the problem re-occurs; this will help narrow down the possibilities if you have a large number of add-ons.
***#'''You MUST close and restart Firefox after EACH change''' via File > Restart Firefox (on Mac: Firefox > Quit).
***#You can use "Disable all add-ons" on the Safe Mode start window.
**See the following for more information
*** http://support.mozilla.com/en-US/kb/Troubleshooting+extensions+and+themes
*** http://support.mozilla.com/en-US/kb/Troubleshooting+plugins
*** http://support.mozilla.com/en-US/kb/Basic+Troubleshooting
 
 
'''You need to update the following:'''
*Adobe Shockwave for Director Netscape plug-in, version 11.0
*Shockwave Flash 10.2 r152
#'''''Check your plugin versions''''' on either of the following links':
#*http://www.mozilla.com/en-US/plugincheck/
#*https://www-trunk.stage.mozilla.com/en-US/plugincheck/
#*'''Note: plugin check page does not have information on all plugin versions'''
#*There are plugin specific testing links available from this page:
#**http://kb.mozillazine.org/Testing_plugins
#'''Update Shockwave for Director'''
#*NOTE: this is not the same as Shockwave Flash; this installs the Shockwave Player.
#*Use Firefox to download and SAVE the installer to your hard drive from the link in the article below (Desktop is a good place so you can find it).
#*When the download is complete, exit Firefox (File > Exit)
#*locate and double-click in the installer you just downloaded, let the install complete.
#*Restart Firefox and check your plugins again.
#*'''Download link and more information''': http://support.mozilla.com/en-US/kb/Using+the+Shockwave+plugin+with+Firefox
#'''Update the [[Managing the Flash plugin|Flash]] plugin''' to the latest version.
#*Download and SAVE to your Desktop so you can find the installer later
#*If you do not have the current version, click on the "Player Download Center" link on the "'''Download and information'''" or "'''Download Manual installers'''" below
#*After download is complete, exit Firefox
#*Click on the installer you just downloaded and install
#**Windows 7 and Vista: may need to right-click the installer and choose "Run as Administrator"
#*Start Firefox and check your version again or test the installation by going back to the download link below
#*'''Download and information''': http://www.adobe.com/software/flash/about/
#**Use Firefox to go to the above site to update the Firefox plugin (will also install plugin for most other browsers; except IE)
#**Use IE to go to the above site to update the IE ActiveX
#*'''Download Manual installers'''.
#**http://kb2.adobe.com/cps/191/tn_19166.html#main_ManualInstaller
#**Note separate links for:
#***Plugin for Firefox and most other browsers
#***ActiveX for IE

Firefox will not launch, but shows in task manager, after updating graphics drivers to AMD's 13.1.

Hi,
After updating to the AMD 13.1 drivers, on my 5770, Firefox will not launch; it does, however, show in the task manager. I should note that it will start in Windows safe mode; when I had it open in safe mode, I used that time to disable all plugins, add-ons, extensions, and created a new profile. This did not help. I also tried launching Firefox in to its safe mode, and had no luck with this either.
I experienced this problem once before, when trying to update to a previous version. I believe I was moving from 12.1 to 12.4, but I'm not 100% sure of that. Ultimately, my solution then was to retrograde back to my previous driver. The steps mentioned in the previous paragraph did not help at that time, not did a complete reinstall.
15 years of computer repair experience, and this has me baffled.
Thank you to anyone who might be able to help.
Possibly relevant specs.
Windows 7 Ultimate x64
AMD Phenom II x4
6BG Ram
AMD 5770 graphics, running Catalyst 13.1

By any chance, did you disable Firefox's use of hardware graphics acceleration? To avoid a round-trip through Windows Safe Mode, you could try adding these to your prefs.js file while Firefox is closed.
To quickly open the folder with the correct prefs.js file, you can use
Help > Troubleshooting Information > "Show Folder" button
Because Firefox may overwrite change to this file at shutdown, you should edit it after closing Firefox and allowing a few moments for Firefox to finish updates to the files.
These are the preferences I think are most relevant:
user_pref("gfx.content.azure.enabled", false);
user_pref("gfx.direct2d.disabled", true);
Does that make any difference?

Firefox will not launch

firefox will not launch after upgrading. Every time I try to launch I am advised to reboot to complete the upgrade.

I think you already known that latest firefox version 13.0.x don't work with xp sp1, needs sp2 and above.
Try [https://support.mozilla.org/en-US/kb/uninstall-firefox-from-your-computer Uninstall Firefox from your computer]
then Download the latest version(with your safari) from :
http://www.mozilla.org/en-US/firefox/all.html
and Install the version that you have downloaded (13.0.1).
Do not select to remove your personal data, your profile data is stored elsewhere in the [http://kb.mozillazine.org/Profile_folder_-_Firefox Firefox Profile Folder], so you won't lose your bookmarks or other personal data.
see also for info : [https://support.mozilla.org/en-US/kb/install-firefox-windows Install Firefox on Windows]
thank you
Please mark "Solved" the answer that really solve the problem, to help others with a similar problem.

After updating firefox will not launch

Ever since version 8 became available whenever I update FF it will not launch. No error messages or anything, just no response at all from the button. I have cleared the cache and cookies, completely removed FF using the control panel - add remove programs, deleted the FF folder from C: program files and then emptied the trash. then downloaded a fresh copy of FF from www.mozilla.org. Again no response at all when attempting to launch. not even an error report. I am running Microsoft XP Pro 5.1.200 SP 3 Build 2600 on a Dell OptiPlex 745 processor x86 family 6 model 15 stepping 2 intel ~1794 mhz

What about the latest version of Firefox, Firefox 9? Does that work?
If it doesn't, the instructions here might be of help: [[Firefox will not start]]

My firefox is not running- when i try to open it their appears.. "The exception unknown software exception (0xc0000417) occurred in the application at location

<blockquote>Locking duplicate thread. 
Please continue here: [[/questions/942433]]</blockquote>
my firefox is not running… when i try to open it their appears.. “The exception unknown software exception (0xc0000417) occurred in the application at location 0x78b2ae6e” ..what can i do..????
REPLY

If you have submitted crash reports then please post the IDs of one or more crash reports that have this format:
*bp-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
See:
*http://kb.mozillazine.org/Mozilla_Crash_Reporter
*https://support.mozilla.org/kb/Mozilla+Crash+Reporter
If you can't open Firefox then see:
*http://kb.mozillazine.org/Mozilla_Crash_Reporter#Location_of_crash_reports
*http://kb.mozillazine.org/Mozilla_Crash_Reporter#Viewing_crash_reports
See also:
*http://kb.mozillazine.org/Firefox_crashes
*https://support.mozilla.org/kb/Firefox+crashes
Try a clean reinstall and delete the Firefox program folder before reinstalling a fresh copy of Firefox.
*C:\Program Files\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

After updating to Lightroom CC 2015, it will not launch when i click on the icon.

After updating to Lightroom CC 2015, it will not launch when I click on the icon. A window gets up: "__crtCreateSymbolicLinkW" not found in DLL "MSVCR110.dll". Same failure occurs when I start Photoshop CC.
LR 5.7.1 Starts without Problem.

Have you tried logging out of your CC desktop app, then logging back in again? Quit/Restart won't work, but logging out and back in should. See here: https://helpx.adobe.com/creative-cloud/kb/sign-in-out-creative-cloud-desktop-app.html

I have recently started downloading video files. I have downloaded a season of a tv show. The season had 9 episodes. Three downloaded fine and the other 6 will not. When i try to download them i get a message saying error -34 The disk you are attempting t

I have recently started downloading video files. I
have downloaded a season of a tv show. The season had
9 episodes. Three downloaded fine and the other 6
will not. When i try to download them i get a message
saying error
-34 The disk you are attempting to use is full.
Remove files and empty recycle bin to create space. I
dont understand why it keeps doing this. I have lots
of space on itunes and my computer is not full
either.What can i do? How can i prevent this? Is
there a problem with my computer? Thank you!

have a look at this support article.

My app store will not open. when i try to open it i get an error that reads "You can't open the application App Store because it may be damaged or incomplete". How can I fix this?

my app store will not open. when i try to open it i get an error that reads "You can't open the application App Store because it may be damaged or incomplete". How can I fix this?

I am having the exact same problem. MacForums has been helping me, and I called Apple. After trying everyone's suggestions, and Apple's, no success.
My App Store app still says "incomplete or damaged." There is even a circle with a line through it on the icon. Apple said reinstall my Snow Leopard upgrade disc (not my original Leopard disc) and then run the Combo Update (like your suggestion). Did not work. I also updated the software from "Software Update". Rebooted.
I think this started after I replaced my hard drive with a SSD and moved the hard drive to where the DVD was. I wonder if the person above who had the same problem also installed a SSD?
Anyway, anymore ideas? Even Apple is stumped.
(In answer to the other post above, my Quicktime works fine.)
Message was edited by: mrivmriv
Just did some more reading. I was going by the icon in the dock. When I checked in Finder, there it was, fixed and brand new!! Thanks, anyway.
Message was edited by: mrivmriv

Firefox will not launch after latest OS X security update

Just installed latest Apple software update on Snow Leopard. Now, Firefox will not launch. Checked system logs and get this:
11/21/10 10:24:20 PM com.apple.launchd.peruser.501[155] ([0x0-0x6d06d].org.mozilla.firefox[802]) Exited with exit code: 1
The following may or may not be related. Before installing the update, I had lots of these messages in my logs:
11/21/10 7:27:17 PM firefox-bin[39594] *** __NSAutoreleaseNoPool(): Object 0x1422680 of class __NSCFDate autoreleased with no pool in place - just leaking
11/21/10 7:27:17 PM [0x0-0x493493].org.mozilla.firefox 2010-11-21 19:27:17.323 firefox-bin[39594:903] *** __NSAutoreleaseNoPool(): Object 0x1422680 of class __NSCFDate autoreleased with no pool in place - just leaking

Sounds like you may have a check in the box for HTTP and/or HTTPS proxy servers, but you are not behind a proxy server. Safari and Software Update use the HTTP port, Mail doesn't, and Firefox ignores the Mac OS preferences and uses it's own proxy settings.
Go to System Preferences > Network > active connection > Proxies tab and if there are proxies checked, UNcheck them.
Hope this helps...

Suddenly, Firefox will not launch. When I try with the Task Manager up, it never appears on the list of applications.

Similar Messages

Maybe you are looking for