Firefox will not start after an update.

I have to manually uninstall Firefox and manually install the update every time.
I asked a similar question before. The response was to start in safe mode. BUT the program will not start. It acts as if there is a software switch set to "don't run this program under any circumstance." The switch is either in the registry or among the program files, because these both get cleared on a manual uninstall. The update procedure is not clearing the registry or the program files.
Does the update process uninstall the previous version and then install the update version?
Part 2 --
I often cannot find the update manually on the Firefox site.
I am on the Beta release channel. The current release is 33.0 beta 4. However, the most recent on the site is beta 3. Where is 33.0 beta 4?
OS is Windows XP latest release.

Thanks kenton. But now pop-up says beta 5.
The ''real issue'' is what is going on. On one machine the update process works, but on my other machine it does not.
The machines are identical IBM T60s with Windows XP.
This is a real mystery, as well as being annoying.
A clue or suggestion any one?

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Firefox will not start after interrupted update to 5.0

Lenovo x200 | Windows 7 32bit | Firefox 5.0
I was updating Firefox from version 3.6 (I think) to 5.0. Simultaneously I had done a update on Windows that seemed to have stopped. The update of Firefox had also come to a stop. As I remember it the installation was complete, and I was attempting to start the program, when Firefox was checking compatibility with installed plug-ins and so forth.
The Windows updates installed fine afterwards but after several reinstalls of Firefox, I still can't seem to get it to start.
There is no error message or notification at all when trying to start Firefox.
One processes is created, staying steady at 50% CPU and 26 404 K memory.
If i try to open another instance of Firefox I get a process that takes 0% CPU and about 1 844 K memory.
Summary:
Firefox fails to start after interrupted update to 5.0 from 3.6.
There is no error message.
Firefox never starts (and the process never shuts down), just shows in the Task Manager under Processes steady at 50% CPU and about 26 000 K memory (I've seen it do this for at least 20 minutes, before terminating it).

Thanks kenton. But now pop-up says beta 5.
The ''real issue'' is what is going on. On one machine the update process works, but on my other machine it does not.
The machines are identical IBM T60s with Windows XP.
This is a real mystery, as well as being annoying.
A clue or suggestion any one?

Firefox will not start after an update, I cannot log in to Firefox in any manner.

Firefox does not work any more and every time I attempt to access it (even in Safe Mode) it displays the following message:
Firefox.exe- Entry Point Not Found
The procedure entry point JS_GetOperationLimit could not be located in the dynamic link library js3250.dll.
I have absolutely no way of getting into Firefox to undo whatever has gone wrong, is it still possible to solve this without having to completely purge and reinstall Firefox?
== This happened ==
Every time Firefox opened
== I clicked on something else during the installation of an update and Firefox has failed to start ever since ==
== User Agent ==
Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; GTB6.5; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)

Thanks kenton. But now pop-up says beta 5.
The ''real issue'' is what is going on. On one machine the update process works, but on my other machine it does not.
The machines are identical IBM T60s with Windows XP.
This is a real mystery, as well as being annoying.
A clue or suggestion any one?

Firefox will not start, after reboot.

For a few months now Firefox will not start after I reboot my computer. In order to get it to start I click the exe then must go into task manager kill it, click the exe again, kill it again then, from there it will typically start, but sometimes it may take one or two more trys. When clicking the exe firefox will appear in the task manager under processes but will will start with ~7% CPU usage, then quickly drop to zero every time until it does actually open and start. I have ran a full system recovery and started anew after reinstalling mozilla several times failed to fix the problem. I run virus and spyware checks often and come up clean, and also run Chrome as a default browser.
== This happened ==
A few times a week
== Around the time 3.5 was released

Hello Tom.
You may be having a problem with some Firefox add-on that is hindering your Firefox's normal behavior. Have you tried disabling all add-ons (just to check), to see if Firefox goes back to normal?
Whenever you have a problem with Firefox, whatever it is, you should make sure it's not coming from one of your installed add-ons, be it an extension, a theme or a plugin. To do that easily and cleanly, run Firefox in [http://support.mozilla.com/en-US/kb/Safe+Mode safe mode] and select ''Disable all add-ons''. If the problem disappears, you know it's from an add-on. Disable them all in normal mode, and enable them one at a time until you find the source of the problem. See [http://support.mozilla.com/en-US/kb/Troubleshooting+extensions+and+themes this article] for information about troubleshooting extensions and theme. You can troubleshoot plugins the same way.
If you want support for one of your add-ons, you'll need to contact its author.

Firefox will not start after a software update

After software installation Firefox will not start and displays a message box that says that it crashed and can't start

Installed latest Firefox v. 6 software.
Drop box saying that Firefox could not start and had to shut down upon start.
Yes, Firefox started with Shift and click of icon.
I uninstalled software, re-installed and it seems to be working fine.
Thank you for your help

Firefox will not start after I upgraded from Ubuntu 8.04 to Ubuntu 10.04.

I was using Firefox without issue on Ubuntu 8.04. I then upgraded to Ubuntu 10.04. Firefox would not start after upgrade. Message said it was already running!
I checked the System Monitor and saw it was "sleeping". I ended process. Firefox then would start, however..... I always have to go into System Monitor before I start Firefox to stop it from running (sleeping) even if I already just quit the program or after a fresh reboot.
I do not use a firewall or virus program.
My router has some sort of firewall hardware, and it is the same router I used with 8.04 with no problem.
What is going on? Why is the program sleeping when I try to start it. Why do I always get the message that it is already running (and I have to shut it down) before I can start it.
It is either a Ubuntu problem or a Firefox problem.
Sonny.

''Crashes at startup can occur in Firefox 7 or above (but not Firefox 6 or earlier) if you are using a corporate login system such as IBM Tivoli Access Manager or Oracle Enterprise Single Sign On Manager ([https://bugzilla.mozilla.org/show_bug.cgi?id=680927 bug 680927]). '''See the bug report for a suggested workaround''' or downgrade to Firefox 3.6.xx (available [http://www.mozilla.org/firefox/all-older.html here]) which is still being maintained.''
Ref: http://kb.mozillazine.org/Firefox_crashes#Crash_when_starting_Firefox
The workaround for the crash is linked [https://bugzilla.mozilla.org/attachment.cgi?id=563484 HERE], under "Attachments" in the bug report. When you click that link it will show the contents of the .reg file (you can save the page as "ff7fix.reg" on your computer, and then merge it into the Windows registry, f you are comfortable doing that).

Firefox will not start after computer restart

Install Firefox, runs fine. Restart computer, Firefox will not start or finally when it tries to start script errors occur. If I reinstall Firefox after a computer restart, it will work fine, again when the computer is shut down the next time it is started, will not be able to use Firefox. Firefox will not start up in Firefox safe mode, will not start in windows safe mode. Not add on's, nothing added, just the Firefox installer Performed complete system restore on the computer, same problem. Windows 7 Pro. Remove Firefox from windows control panel, restart computer, install firefox, will run. turn off computer, turn on computer, firefox will not start or freezes. I am interfacing the internet via Explorer now.
I have reinstalled Firefox so it will run in order to perform the steps requested below.

Try this
*https://support.mozilla.org/en-US/kb/firefox-wont-start-find-solutions
Open TaskManager, if it running '''firefox.exe''' > end all processes
Sometimes a problem with Firefox may be a result of malware installed on your computer, that you may not be aware of.
You can try these free programs to scan for malware, which work with your existing antivirus software:
* [http://www.microsoft.com/security/scanner/default.aspx Microsoft Safety Scanner]
* [http://www.malwarebytes.org/products/malwarebytes_free/ MalwareBytes' Anti-Malware]
* [http://support.kaspersky.com/faq/?qid=208283363 TDSSKiller - AntiRootkit Utility]
* [http://www.surfright.nl/en/hitmanpro/ Hitman Pro]
* [http://www.eset.com/us/online-scanner/ ESET Online Scanner]
[http://windows.microsoft.com/MSE Microsoft Security Essentials] is a good permanent antivirus for Windows 7/Vista/XP if you don't already have one.
Further information can be found in the [[Troubleshoot Firefox issues caused by malware]] article.
Did this fix your problems? Please report back to us!

Firefox will not start after I downloaded the newest version

Firefox used to work on my computer but will not start now that I have downloaded the newest version.

See [[Firefox will not start]]
If you issue is resolved by this post please click Solved it! so we can assist others.

Firefox will not start after updating to version 7.0

Mozilla Firefox automatically updated itself to 7.0. Now, Mozilla will not start on my computer. It shows that it is running in task menu- processes... but not in Applications.

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 start after upgrade from 3.0.1

I have Firefox 3.0.1. I would like to upgrade to 3.6, but if I try to upgrade to any version, I cannot open Firefox. It is not like the other "Will not start" problems, because in the Task Manager, firefox.exe pops up, then goes away instantly. I have tried using Safe Mode, doing a clean install by uninstalling Firefox and my profile, cleaning the registry, then using CCleaner, then trying to reinstall, but the problem persists. Sometimes firefox.exe doesn't even show up in the Task Manager. I also cannot use any version of IE(even if I wanted to), Safari or Chrome. They all have the same results. I suspect that it is not a problem with Firefox, but with my computer, but I don't what is wrong. Can anyone help me?
== This happened ==
Every time Firefox opened
== I upgraded from 3.0.1

Sounds like something is killing off your browsers before they can start. I really have no idea why Firefox 3.0.1 is working somehow, though.
Do a malware check with a few different programs, you need to use all, because not all programs detect the same malware.
For each of these, make sure they are updated after installing, and run a full scan.
http://www.malwarebytes.org/mbam.php - Malwarebytes' Anti-Malware
http://www.superantispyware.com/ - SuperAntispyware
http://www.safer-networking.org/en/index.html - Spybot Search & Destroy
http://www.microsoft.com/windows/products/winfamily/defender/default.mspx - Windows Defender: Home Page

Firefox will not start after I restart my computer.

I can close firefox and restart the program just fine as long as I don't shut down my computer. If I open the profile manager, I can change profiles and this fixes it but this is only a temporary fix.
== This happened ==
Every time Firefox opened
== just recently

Hello Joshua.
Hopefully this support article is what you need:
https://support.mozilla.com/en-US/kb/Firefox+will+not+start

Firefox will not start after updating

Troubleshooting steps taken:
I have uninstalled and reinstalled the program.
I shift right clicked and Ran as Administrator.
I get no error message. Just... nothing happens.
Possibly related, I tried to run Adobe Flash update and it does not run either. Everything else seems to work fine on my system, including IE, however.

One last try: [[Troubleshoot Firefox issues using Safe Mode]]
In order to preserve the profile, make a copy of the profile folder before a clean reinstall: [[Back up and restore information in Firefox profiles]]
'''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]].
<b>WARNING:</b> 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. <u>These cannot be easily recovered unless they have been backed up to an external device!</u> See [[Back up and restore information in Firefox profiles]]. 
Please report back to say if this helped you!
Thank you.

Firefox will not start after updating on Windows XP

I have just updated to the most recent version of firefox, 8.0.1, and it simply does not start when i click the icon.
It logs processes in the task manager, but does not actually launch the program.
The solution already listed on this site is not valid for windows XP, because i have no "application data" folder for firefox under my username.
How can i fix this?

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 start after updating spyware doctor

I updated Spyware Doctor (normal auto update), it asked for a reboot and now Firefox doesn't start, just hangs. I can uninstall and re-install but I don't want to loose my bookmarks. How can I get Firefox (7.01) to run or just save my bookmarks.

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 after a update, even in safe mode

I click on the firefox icon
It starts to load with the hourglass on the mouse thig going, then it does not start. I tried in the safe mode,
It will not load
My Computer said it was updating fire fox just before that.
I have removed all the cookies everywhere using that CC Cleaner
I have restarted the computer

Run the Firefox program once as Administrator (right-click: Run as Administrator).
See also:
* http://kb.mozillazine.org/Software_Update (Software Update not working properly)
* [[Software Update Failed]]
If that doesn't help then do a clean reinstall.
Clean (re-)install:
* Download a fresh Firefox copy and save the file to the desktop.
* Firefox 4.0: http://www.mozilla.com/firefox/all.html
* Firefox 3.6.x: http://www.mozilla.com/en-US/firefox/all-older.html
* Uninstall your current Firefox version and remove the Firefox program folder before installing that copy of the Firefox installer.
* Don't remove personal data if you uninstall the current version.
* 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.
Your bookmarks and other profile data are stored elsewhere (not in the Firefox program folder) and won't be affected by a reinstall, but make sure that you do not select to remove personal data if you uninstall Firefox.

Firefox will not start after an update.

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