Firefox crashes on startup - will not open at all

I cannot open firefox at all; it crashes on startup. I have tried opening it holding shift, to attempt opening in safe mode.
I cannot update firefox because I cannot open it.

@embacy -> Do you have any single-sign on (SSO) extensions installed? Do you have Roboform installed?

Similar Messages

I updated Firefox and now it will not open at all. The hourglass shows that it's working but then nothing. I went to add/remove and removed mozilla and reinstalled it and still the same thing. It worked fine before I updated.

I updated Firefox and now it will not open at all. The hourglass shows that it's working but then nothing. I went to add/remove and removed mozilla and reinstalled it and still the same thing. It worked fine before I updated. Now I can't even remove the program at all. Why is this happening?

Start Firefox in [[Safe Mode]] to check if one of the extensions or if hardware acceleration 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
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
There may be extensions and plugins installed by default in a new profile, so check that in "Tools > Add-ons > Extensions & Plugins" in case there are still problems.
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've just updated firefox and now it will not open at all. Please help!

I use gmail and a couple of days ago I started having trouble accessing it and in fact any google related site. Apparently my version of firefox was not supported so I updated to the current version this morning but then found that firefox would not open at all. There are no error messages. I have tried restoring my settings to those of yesterday but although my system says I have returned to the old version 3.5.15 it still will not open. I can now only access the internet by using an ancient version of Microsoft Internet Explorer - which is also not supported by gmail. Although I'm limping on I could really do with some help!!

Perhaps give one of the following documents a try:
iTunes for Windows Vista or Windows 7: Troubleshooting unexpected quits, freezes, or launch issues
iTunes for Windows XP: Troubleshooting unexpected quits, freezes, or launch issues

I have upgraded from firefox 4 to firefox 5 and now it crashes and will not open at all just produces an error box to submit the fault. I have submitted and now cannot use firefox at all cannot open it cannot use it cannot do anything with it.

I wish I could go back to version 4.
Have spent hours now .
Upgraded to 5 and now completely useless, will not open at all please help

I have this problem with Firefox 5.0 too. You are forced to reboot when access to 5.0 is denied. I had so many problems with 4.0 as well. I am so tired of the crashes and seeing that popup window to send your comments, it is ridiculous. I also find in 5.0 that mouse controls are fruitless and sometimes take over. The pages will jump forward or back, the pull down menus do not function, clicking boxes in online email don't work and pages will zoom in or out by themselves. I have three computers with different operating systems that this happens with. All these updates by programmers are crap. I thought I set firefox to not update automatically, since updates seem to be worse than the previous version, but it happens anyway. I will surf for an older version or switch to something else. Too bad because after 10+ years, they are losing my loyalty.

Firefox will not open at all. I only get the Mozilla Crash Reporter over and over.

After updating yesterday, Firefox will not open. I repeatedly get the Mozilla Crash Reporter. I've scanned my computer for malware, I've tried to open it in safe mode (it won't), I've completely uninstalled and reinstalled Mozilla, but nothing works. Each time I reinstall, I still get the Mozilla Crash Reporter. The program will not open at all.
I ran my crash ID. Here is the info: bp-eff196eb-ed21-45ee-83c6-e0fc42130123

hello, this crash is caused by Websense Endpoint security software that is running on the system. please try to install all the updates for this program that are available...

Firefox 4.0 will not open at all. It shows that the process is running in the task manager but will not open the window even after closing the prcess and restarting.

I have had firefox since an earlier 2. version and have been able to upgrade as normal. After the installation is done it will not open at all. I have restarted and even uninstalled all previous version .exe and still nothing. I am using windows 7 OS. I am still running 3.6.8 and would love to see the new one running on my laptop.

hello, this crash is caused by Websense Endpoint security software that is running on the system. please try to install all the updates for this program that are available...

Safari Crashes and then will not open yahoo.mail or gmail

Safari Crashes and then will not open yahoo.mail or gmaill
Is anyone else having these, or similar problems. i cannot log-in to my yahoo.com or onto gmail. The issue started yesterday.
The message states that it cannot secure the
connection.
Any suggestions?
I downloaded Netscape to be able to log-in into my accounts.
What a pain. I am using 10.3.9, and all was fine
thanks,
victoria

This just happened to me. Apparently yahoo mail just implemented something.. Check out this message from yahoo mail.
=================
Sorry, Yahoo! Mail Beta does not support your browser.
You can either download a compatible browser or proceed to the original Yahoo! Mail.
If you want to use the Yahoo! Mail Beta...
You can download any of the supported browsers for free by clicking the links below:
Internet Explorer 6.0 or higher (for Windows)
Firefox 1.5 or higher (for Mac and Windows)
SeaMonkey 1.0.8 or higher (for Mac and Windows)
To proceed to original Yahoo! Mail...
Simply follow the link below. If you sign in later with a supported browser, you will automatically be taken to Yahoo! Mail Beta.
Proceed directly to the original Yahoo! Mail
I use 10.3.9 and I have no idea why yahoo mail stopped working today. I have firefox installed on my machine. BTW - firefox is able to serf the web without issues on all of my sites. I often wonder why apple wanted to build a browser, why not just use firefox and contribute to it's development for the mac environment?

My itunes will not open at all. it occasionally will open but when i plug my iphone into it the program freezes and crashes. please help as soon as possible

my itunes will not open at all. it occasionally will open but when i plug my iphone into it the program freezes and crashes. please help as soon as possible

i think i might have a solution... i have windows vista and after i installed to latest itunes update everytime i tried to open it it would freeze. I tried everything, including uninstalling itunes and all of its components and reinstalled it numerous times. So i went to the itunes folder in my folders, not on itunes, and i deleted my itunes library and playlists. After that it worked just fine, all of my music was deleted but luckily i had my files saved elsewhere.
I hope this helped! I know its frustrating and APPLE/ITUNES NEED TO FIX THE PROBLEM!!!!

I upgraded from 3.6.13 to Beta 4.0 and now Firefox will not open at all I tried to uninstall to start again but it will not uninstall either it does nothing.

I uninstalled Beta 4 and re-installed 3.6.13 now Firefox will not open at all I tried to uninstall to start again but it will not uninstall either it does nothing, I have been using Firefox for a long time but cannot resolve this problem can anyone help and give me a solution please. As I use Firefox as my web browser it is very frustrating.
The fact it will not uninstall appears to be something completely new as nobody I know who uses Firefox has ever encountered this in the past.

Did you check your security software (firewall)?
A possible cause is security software (firewall) that blocks or restricts Firefox without informing you about that, 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.
See [[Server not found]] and [[Firewalls]] and http://kb.mozillazine.org/Firewalls
If necessary then also see:
* http://kb.mozillazine.org/Browser_will_not_start_up
* http://kb.mozillazine.org/Error_loading_websites

I have used Firefox on my computer for several years. Today, after upgrading to the new version, I was not able to open Firefox. I have tried several times uninstalling and re-downloading Firefox. It still will not open! What is wrong?

I have used Firefox on my computer for several years. Today, after upgrading to the new version, I was not able to open Firefox. I have tried several times uninstalling and re-downloading Firefox. It still will not open! Is the new version not compatible with Windows Vista?

I hope that link points to mozilla.com or mozilla.org
You will have to close firefox.exe with the Windows Task Manager from the "Processes" tab of the WTM since you don't have a widow to close.
The best way to close Firefox is through File > Exit, for those who stuck with the "Firefox" button click on the Firefox button then Exit. It is not perfect but it is a lot better than just closing the window with the "X" in the upper right corner

I have firefox and after updating the other day, now it will not open at all, so I have to open the internet using the other icon thats not firefox

The icon is there but will not open at all.

Hello,
Certain Firefox problems can be solved by performing a ''Clean reinstall''. This means you remove Firefox program files and then reinstall Firefox. Please follow these steps:
'''Note:''' You might want to print these steps or view them in another browser.
#Download the latest Desktop version of Firefox from [https://www.mozilla.org mozilla.org] (or choose the download for your operating system and language from [https://www.mozilla.org/firefox/all/ this page]) and save the setup file to your computer.
#After the download finishes, close all Firefox windows (or open the Firefox menu [[Image:New Fx Menu]] and click the close button [[Image:Close 29]]).
#Delete the Firefox installation folder, which is located in one of these locations, by default:
#*'''Windows:'''
#**C:\Program Files\Mozilla Firefox
#**C:\Program Files (x86)\Mozilla Firefox
#*'''Mac:''' Delete Firefox from the Applications folder.
#*'''Linux:''' If you installed Firefox with the distro-based package manager, you should use the same way to uninstall it - see [[Installing Firefox on Linux]]. If you downloaded and installed the binary package from the [http://www.mozilla.org/firefox#desktop Firefox download page], simply remove the folder ''firefox'' in your home directory.
#Now, go ahead and reinstall Firefox:
##Double-click the downloaded installation file and go through the steps of the installation wizard.
##Once the wizard is finished, choose to directly open Firefox after clicking the Finish button.
More information about reinstalling Firefox can be found [[Troubleshoot and diagnose Firefox problems#w_5-reinstall-firefox|here]].
WARNING: Do not use a third party uninstaller as part of this process. Doing so could permanently delete your [[Profiles|Firefox profile]] data, including but not limited to, extensions, cache, cookies, bookmarks, personal settings and saved passwords. These cannot be easily recovered unless they have been backed up to an external device! See [[Back up and restore information in Firefox profiles]]. 
Please report back to say if this helped you!
Thank you.

I have a Mac running OS 10.5.8. I downloaded Firefox 4 and not the program will not open at all. I am also unable to download the previous version that was running fine. I'm using Safari to contact you.

I have a Mac G5 running OS 10.5.8. I downloaded Firefox 4 and now the program will not open at all. I get an error message that reads --
"You cannot open the application 'Firefox" because it is not supported on this architecture."
I am also unable to find a link to download the previous version (3.6) that was running fine. (I'm using Safari to contact you.)

Same proble here, although the Firefox system requirements says it is OK to have PowerPC G3 G4 or G5 ( I have G5 2GHZ)
My solution; very simply use timemachine to restore the previous Frefox 3.x
worked great in 3 mns

Firefox will not open at all. I tried to remove it from the programs to try to reinstall it but it wont let me remove it. So I tried to download again anyways and ff still wont open. My email is alicia@*****

Firefox will not open at all. I tried to remove it from the programs to try to reinstall it but it wont let me remove it. So I tried to download again anyways and ff still wont open. My email is alicia@****

Did you check your security software (firewall)?
A possible cause is security software (firewall) that blocks or restricts Firefox without informing you about that, 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.
See [[Server not found]] and [[Firewalls]] and http://kb.mozillazine.org/Firewalls
If necessary then also see:
* http://kb.mozillazine.org/Browser_will_not_start_up
* http://kb.mozillazine.org/Error_loading_websites

Firefox will not open at all. Google Chrome main browser.

Google Chrome my main web browser with Comcast as home page.
Now Firefox will not open at all. What do I do. Delete Firefox and reinstall is what I think?

Yes, i would try reinstalling Firefox first.
A few other basic trouble shooting things you can try is this:
Run all Windows Updates, install all needed service packs, etc.
Update your graphics driver (Firefox uses your graphics card for some rendering, and an out of date graphics card driver can cause problems. [[Upgrade your graphics drivers to use hardware acceleration and WebGL]]
Update all your plugins (Flash, Java, etc.): [http://www.mozilla.org/plugincheck/ http://www.mozilla.org/plugincheck/].
Download and Install MalwareBytes Anti-Malware, run a full Scan. [http://www.malwarebytes.org/ http://www.malwarebytes.org/]. This helps check that there are no viruses on your computer causing issues. You can uninstall this program after you clean off any infections.

I was told I had to upgrade Firefox to 4.0, downloaded the dmg, launched it and now Firefox will not open at all.

I was told I had to upgrade Firefox to 4.0, downloaded the dmg, launched it and now Firefox will not open at all. It tells me "The operation can't be completed because you don't have permission to access some of the items." Also, that "Firefox cannot be opened because of a problem." And it give a bunch of code. This is my main browser. What is happening here? My OS X is 10.6.7. Has this caused a problem?

If you right-click on your Photoshope.exe, select Properties, there should be a Compatibility tab. There you can select Windows XP, Windows 2000, Winows 98 or 95. One of these should allow you to open Photoshop 6, unless you mean CS6.

Firefox crashes on startup - will not open at all

Similar Messages

Maybe you are looking for