My firefox won't open on my computer recently. Safari and Internet explorer open to the web without a problem. Thanks

When I click on the icon, nothing happens. Up until about 2-3 weeks ago, it worked fine. Safari and IE open without a problem. I have a computer running Windows 7

'''Try the Firefox Safe Mode''' to see how it works there. The Safe Mode is a troubleshooting mode, which disables most add-ons.''
''(If you're not using it, switch to the Default theme.)''
* You can open the Firefox 4.0+ Safe Mode by holding the '''Shift''' key when you use the Firefox desktop or Start menu shortcut.
* Or use the Help menu item and click on the '''Restart with Add-ons Disabled...''' menu item while Firefox is running.
''Don't select anything right now, just use "'Start in Safe Mode"''
''To exit the Firefox Safe Mode, just close Firefox and wait a few seconds before using the Firefox shortcut (without the Shift key) to open it again.''
'''''If it is good in the Firefox Safe Mode''''', your problem is probably caused by an extension, and you need to figure out which one.
Please follow the [[Troubleshooting extensions and themes]] article for that.
''When you figure out what's causing your issues, please let us know. It might help other users who have the same problem.''

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Firefox won't load any websites, where as Safari and Internet Explorer have no issues.

I've re-installed Firefox and changed Firefox's proxy settings amongst other suggestions that were made on a similar page. It was Firefox 3.6, but I tried installing the 4 version. And no one has been around to live chat with, pretty lame that its offered if I can't even use it.

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.
See [[Server not found]] and [[Firewalls]] and http://kb.mozillazine.org/Firewalls
If you use a Firefox 4 beta release then you should create a new profile exclusively for the 4.0 beta version and create a desktop shortcut with -P "profile" appended to the target to launch that profile.
* http://kb.mozillazine.org/Testing_pre-release_versions
* http://kb.mozillazine.org/Creating_a_new_Firefox_profile_on_Windows
* http://kb.mozillazine.org/Using_multiple_profiles_-_Firefox

Firefox won't open from the taskbar or desktop - what do I do

Firefox won't open. I uninstalled it and downloaded a new one. When I tried running it I was asked to close Firefox. As I did not have it running, I could't close it. All other programmes were closed. I also have the mozilla email which is still working.
Regards
Lusaka

Hello Gigi,
Thank you for providing so much detail about the issue you are experiencing with the iTunes app after upgrading to iOS 7.
The first thing I recommend is quitting and relaunching the applications on your iPhone:
Double-click the Home button.
Swipe left or right until you have located the app you wish to close.
Swipe the app up to close it.
You can find the full article here:
iOS: Force an app to close
http://support.apple.com/kb/ht5137
If you are still seeing the same issue after quitting and relaunching the iTunes app, I recommend restarting your phone and then resetting if it's still not working:
Restarting your device
Press and hold the Sleep/Wake button for a few seconds until the red "slide to power off" slider appears, and then slide the slider.
Press and hold the Sleep/Wake button until the Apple logo appears.
Note: Reset your device only if you are unable to restart it.
Resetting your device
Press and hold the Sleep/Wake button and the Home button together for at least ten seconds, until the Apple logo appears.
You can find the full article here:
iPhone, iPad, iPod touch: Turning off and on (restarting) and resetting
http://support.apple.com/kb/ht1430
If the issue persists, the last thing I recommend is backing up and restoring your iPhone:
iOS: How to back up and restore your content
http://support.apple.com/kb/HT1766
iTunes: Restoring iOS software
http://support.apple.com/kb/HT1414
Thank you for using Apple Support Communities.
Best,
Sheila M.

Safari and Internet Explorer won't run on my iMac G4 anymore (OS 10.2.8)

I cant get Safari or Internet Explorer (IE) to work on my iMac anymore. I can get iTines downloads and standard updates, but Safari and IE won't work - usually Safari will open (IE will usually not open completely - hangs up and must be force quit). Safari will hang up when loading a web page. Any ideas?

Try deleting the preference files for each.
Go to Users/yourusername/Library/Preferences and delete com.apple.Safari.plist and com.microsoft.explorer.plist.
John

Safari and Internet Explorer won't run anymore on 10.2.8

I cant get Safari or Internet Explorer (IE) to work on my iMac anymore. I can get iTines downloads and standard updates, but Safari and IE won't work - usually Safari will open (IE will usually not open completely - hangs up and must be force quit). Any ideas?

Try deleting the preference files for each.
Go to Users/yourusername/Library/Preferences and delete com.apple.Safari.plist and com.microsoft.explorer.plist.
John

A botched install on a Mac (to do with importing a profile) means that Firefox won't open on the grounds that the application is 'already open'. Tried removing everything I can find to do with Firefox and re-installed but no success. Any suggestions?

Little more can be added to the above. The warning screen says, 'A copy of Firefox is already open. Only one copy of Firefox can be open at a time.'
I have gone though all the libraries and preferences I can find and removed everything to do with Firefox and Mozilla - it was the first install of Firefox on this drive.

Do a clean (re)install:
* Download a fresh Firefox copy from http://www.mozilla.com/firefox/all.html and save the file to the desktop.
* 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 in the [http://kb.mozillazine.org/Profile_folder_-_Firefox Firefox Profile Folder] (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 won't open, but the process stays in the task manager until I end it

I've tried everything that has been proposed before by you guys and I'm hoping you've found a solution by now. I've tried re installing, allowing Firefox through my firewall, and running it as administrator. I still double click on the icon and nothing happens other than the process showing up in the task manager.

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 http://www.mozilla.org and save the setup file to your computer.
#After the download finishes, close all Firefox windows (click Exit from the Firefox or File menu).
#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.
Please report back soon!
Hope this helps!
Curtis

Firefox won't launch facebook, but it does launch in Internet Explorer. How do I get it to launch in firefox?

When I try to launch facebook, an error message stating it is a untrusted site. But when I launch facebook in internet explorer it launches with out a problem. How do I get it to launch i n firefox? Yes the clock on my computer is set at the correct time.

Check out why the site is untrusted and click "Technical Details" to expand this section.
If the certificate is not trusted because no issuer chain was provided (sec_error_unknown_issuer) then see if you can install this intermediate certificate from another source.
You can retrieve the certificate and check details like who issued certificates and expiration dates of certificates.
*Click the link at the bottom of the error page: "I Understand the Risks"
Let Firefox retrieve the certificate: "Add Exception" -> "Get Certificate".
*Click the "View..." button and inspect the certificate and check who is the issuer of the certificate.
You can see more Details like intermediate certificates that are used in the Details pane.
If <b>"I Understand the Risks"</b> is missing then this page may be opened in an (i)frame and in that case try the right-click context menu and use "This Frame: Open Frame in New Tab".
*Note that some firewalls monitor (secure) connections and that programs like Sendori or FiddlerRoot can intercept connections and send their own certificate instead of the website's certificate.
*Note that it is not recommended to add a permanent exception in cases like this, so only use it to inspect the certificate.

When I start Firefox, no website will open. It states it is unavailable. Internet explorer works at the web sites. I have deleted and reloaded Mozilla and it did not help.

This started about 2 weeks ago. The Home page is Cox and it states initially the web site was under repair. Now whe Mozzilla is opened, a message comes up that the website is uavailable. Clicking on all of the bookmarks results in the same message. The message comes up instantly after the enter button is pushed.

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 won't open from the desktop shortcut nor the program file on the start page.

On many occasions, Firefox will not start (load) unless I reboot my laptop. Version 3.6 on Windows Vista.

Actually, it's not just Mail that isn't working, but the Finder is crashing as well, and there may also be other problems that I don't fully understand. If you can manage to use the computer at all, proceed as follows.
Verify/repair your disk (not just permissions), as described here:
The Repair functions of Disk Utility: what's it all about?
After having fixed all filesystem issues, if any, reinstall the latest system update using the Combo installer:
Mac OS X 10.4.7 Combo Update for PPC
Read the following articles for guidelines on how to properly install system updates:
Troubleshooting installation and software updates
Installing software updates
Basically, you should verify/repair the boot volume before installing the update, and no applications should be running while installing it.

After downloading new version of firefox, i didn't like it and attempted to restore my system to a previous time and version of firefox. Now firefox won't open, even the old version isn't there anymore.

I want to get firefox back, keeping all of the bookmarks.

Download a fresh Firefox copy and save the file to the desktop.
* Firefox 8.0.x: http://www.mozilla.com/en-US/firefox/all.html
Uninstall your current Firefox version.
*Do not remove personal data when you uninstall the current version or you lose your bookmarks and other data in the profile folder.
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.
Your bookmarks and other profile data are stored elsewhere in the Firefox Profile 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.
*http://kb.mozillazine.org/Profile_folder_-_Firefox
*http://kb.mozillazine.org/Profile_backup

Firefox won't open 4kids.tv web site

There are 4 children who use this web site on my computer; http://www.4kids.tv, it loads then disappears then tries to reload but never does.
== URL of affected sites ==
http://www.4kids.tv

Start Firefox in [[Safe Mode]] to check if one of your add-ons is causing your problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).
See [[Troubleshooting extensions and themes]] and [[Troubleshooting plugins]]
If it does work in Safe-mode then disable all your extensions and then try to find which is causing it by enabling one at a time until the problem reappears.
You can use "Disable all add-ons" on the [[Safe mode]] start window to disable all extensions.
You have to close and restart Firefox after each change via "File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit")

Firefox won't come up. I had to use Internet Explorer to get on. What do I do?

I have used Mozilla Firefox for entry to the Internet for several years. A few days ago, when I click on the icon, it doesn't come up. I went into Programs and clicked, still nothing.

Open Task Manager, is firefox.exe listed as a running process on the Processes tab? If so, try closing it and restarting the browser...

What does nsAppShell: Event Window mean? Firefox won't open for me at times and I need to restart.

When I return to my computer, Firefox won't open from the "standby" mode. It gives me the message saying "Firefox is already running, but not responding" and I need to log out or restart. Firefox is not running as far as I know. When I restart, a message comes up asking if I want to close "nsAppShell: Event Window". Once I end this process, it restarts my computer and everything is fine. This is very frustrating and happens all the time. What is "nsAppShell: Event Window"?

The OP asked this question 9 months ago and 850 other people have this problem. Why hasn't Firefox Support answered this question or commented?

Firefox won't open following update. Can't open Profile Mgr, even when using entire directory path in cmd line

I'm running Firefox on a Windows 7 machine. Firefox won't open following the latest update. I've read the help articles and it seems like I need to create a new profile because my settings have likely been corrupted. I'm unable to open Profile Mgr, even when using entire directory path in cmd line. I've tried the following commands in the command line:
firefox -p
"C:\Program Files (x86)\Mozilla Firefox\firefox.exe" -p
Nothing happens with either command.
I'm also running Norton Internet Security. I read a help article Re Virtual Browsing features possibly causing a problem. The article said to check the virtualization setting in the internet security software and to clear the virtual cache. I went thru all of the settings menus in Norton Internet Security version 21.6.0.32 and I didn't see anything that looked like 'virtualization" settings, so I assumed that this doesn't apply to me.
If you have any ideas, I'd sure appreaciate your expertise!!

''arcandl [[#question-1038482|said]]''
<blockquote>
I'm running Firefox on a Windows 7 machine. Firefox won't open following the latest update. I've read the help articles and it seems like I need to create a new profile because my settings have likely been corrupted. I'm unable to open Profile Mgr, even when using entire directory path in cmd line. I've tried the following commands in the command line:
firefox -p
"C:\Program Files (x86)\Mozilla Firefox\firefox.exe" -p
Nothing happens with either command.
I'm also running Norton Internet Security. I read a help article Re Virtual Browsing features possibly causing a problem. The article said to check the virtualization setting in the internet security software and to clear the virtual cache. I went thru all of the settings menus in Norton Internet Security version 21.6.0.32 and I didn't see anything that looked like 'virtualization" settings, so I assumed that this doesn't apply to me.
If you have any ideas, I'd sure appreaciate your expertise!!
</blockquote>
''philipp [[#answer-670108|said]]''
<blockquote>
hello arcandl, when firefox isn't launching after you double-click on the shortcut this is sometimes also a sign of malware being active on a system.
you might want to try running a scan with some different other security tools like the [http://www.malwarebytes.org/products/malwarebytes_free free version of malwarebytes] and [http://www.bleepingcomputer.com/download/adwcleaner/ adwcleaner] which are specialised in removing adware and browser hijackers.
[[Troubleshoot Firefox issues caused by malware]]
</blockquote>
Phillip - You're a genius!!! I ran malwarebytes and it resolved my problem. Thank you so much!!!

My firefox won't open on my computer recently. Safari and Internet explorer open to the web without a problem. Thanks

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