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.

Similar Messages

Firefox says it's still running eventhough I've closed out of a site and will not allow me to open another site. It says "Firefox is still running". I have to completely re-start my computer. It started after I downloaded the newest version.

I log onto an email account and when I'm finished I log out and wait a few minutes before typing in a URL address for a site.
Since downloading your version 6.0.1, I have had this problem. I have to completely re-start my computer.

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

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 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 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 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

When I try to reopen Firefox, it says its already running and to restart my computer or close it down. But, it isn't open. This just started when I downloaded the newest version

I open Firefox, use it then close it. Next time I try to open it, I get a message saying its already open, but, it isnt. I have to constantly restart my computer to use Firefox. What can I do to fix this?
== This happened ==
A few times a week
== I downloaded the newest version of Firefox

See http://kb.mozillazine.org/Firefox_hangs and [[Firefox hangs]] (Hang at exit)

Gift card balance no longer available after I downloaded the newest version of itunes

I downloaded the newest version of itunes and now my balance is no longer visible and I had a balance of $7 or more.

It should now be in the upper-left of the window when you're viewing the iTunes Store, next to your account ID. If you don't see anything there, the iTunes Store doesn't think you have a balance remaining. Confirm that you're logged into the correct account, and if you are check your Purchase History to make sure you should still have a balance left. iTunes doesn't always refresh the display correctly, so you may have actually used up the balance but it wasn't being updated.
If you confirm that you should have balance left but the iTunes Store isn't showing it, go here:
iTunes Support
and follow the instructions to report the issue to the iTunes Store.
Regards.

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 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 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?

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

My front camera will not work after I downloaded the IOS 7.0.4 .. Why is that ?

My front camera will not work on my iPod 5 after I downloaded the IOS 7.0.4! Why is that ??

Try:
- Reset the iOS device. Nothing will be lost
Reset iOS device: Hold down the On/Off button and the Home button at the same time for at
least ten seconds, until the Apple logo appears.
- Reset all settings
Go to Settings > General > Reset and tap Reset All Settings.
All your preferences and settings are reset. Information (such as contacts and calendars) and media (such as songs and videos) aren’t affected.
- Restore from backup. See:
iOS: How to back up
- Restore to factory settings/new iOS device.
If still problem, make an appointment at the Genius Bar of an Apple store since it appears you have a hardware problem.
Apple Retail Store - Genius Bar

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 I downloaded the newest version

Similar Messages

Maybe you are looking for