Firefox Not Loading Websites After Update

''locking this thread as duplicate, please continue at [https://support.mozilla.org/en-US/questions/1053378 /questions/1053378]''
Firefox has stopped working after latest update. I can open it up but then it wont load any websites. It just keeps loading. After if I close it and try to re-open it I get the following error message: "Firefox is already running, but not responding. The old firefox process must be closed to open a new window" and it never opens. If I try to end the process in task manager I can't as it doesn't do anything when I attempt to end the process. Then the only way I can get back on firefox is to restart my computer. This is happening on both my PC and my Laptop both running Norton Security Suite.
Please HELP! as I have tried everything and nothing fixes it. I have tried the following troubleshoot solutions with no luck:
1) Reinstall Firefox
2) Refresh Firefox
3) Removing Firefox from the list of accepted programs in firewall and then adding it back (this was done through Norton as it is managing my Windows Firewall)
4) Creating a new profile and using that one instead
5) Starting Firefox in Safe Mode
6) Updating firefox
7) Updating Norton
Nothing seems to be Working and I'm starting to get frustrated. Any Help is appreciated. Thanks

It is possible that your security software (firewall, anti-virus) 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 and the plugin-container from the permissions list in the firewall and let your firewall ask again for permission to get full, unrestricted, access to install 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
*https://support.mozilla.org/kb/fix-problems-connecting-websites-after-updating
Boot the computer in Windows Safe Mode with network support (press F8 on the boot screen) as a test.
*http://www.bleepingcomputer.com/tutorials/how-to-start-windows-in-safe-mode/

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Firefox stops loading websites after a while

Unfortunately I can't narrow down the problem very much. Firefox just stops loading websites after a while without any obvious reasons - while Chrome or IE work, so it's not a connection problem AND I have it on at least 2 PCs. This is my environment:
Windows 7 x64 Ultimate and Pro, all important updates installed. Both PCs have 8-16 GB RAM, SSD - can't be a resource issue.
Actual version of Kaspersky Internet Security is used, Firefox is not blocked.
Firefox version 37.0.1
Some FF AddOns in use: AdBlock Edge, BetterPrivacy, ColorZilla, Firebug, Flashblock, Ghostery, Web Developer
I'm certain I don't have a virus and the issue is present on a brand new installed system as well. I don't use a proxy, DNS prefetching is disabled and IPv6, too.
It seems to happen more often when the PC hasn't been touched for 20 minutes or so (PC is not falling asleep) and after sleep modes, however it also happens just in the middle of working. I usually have 10-20 pages open (resource friendly ones usually) at once.
This also happens for websites that are already loaded. A click on reload also leads to a can't load website error.
I can't exactly say when this issue started, probably in the last 6 month with some FF update. Before it worked fine. This is becoming a real issue for me because FF becoming very unreliable.
Does anyone else experience this behaviour or has a fix for it?
NB: you may want to check the compatibility of your "None of these solve my problem" button. It might be a Chrome (41.0.2272.118m) issue but if someone's FF is not working and he's trying to find help using another browser...it might be a dead end (nothing happens on click).
Example: https://support.mozilla.org/en-US/questions/new/deskto/other?search=can%27t+load+websites+after+while#summarize-question

Does Firefox work normally again after exiting it and starting it backup again?
Several users reported with Firefox 36 that Firefox would eventually not be able to load more pages. One believed that Firefox was no longer sending DNS requests, which is a prerequisite to being able to connect to the web server. I don't recall that we identified the source of the problem, but in many cases, it was "something" in the settings folder.
Along those lines, could you conduct this test:
'''Create a new Firefox profile'''
''This is in addition to and does not replace your existing settings.''
A new profile will have your system-installed plugins (e.g., Flash) and extensions (e.g., security suite toolbars), but no themes, other extensions, or other customizations. It also should come with completely fresh settings databases and a fresh cache folder.
Exit Firefox and start up in the Profile Manager using Start > search box (or Run) -- type or paste the following and press Enter:
firefox.exe -P
''Don't delete anything here.''
Any time you want to switch profiles, exit Firefox and return to this dialog.
Click the Create Profile button, assign a name like April7, and ignore the option to change the folder location. Then start Firefox in the new profile you created.
It might take a while to determine whether the new profile is works better than your old one. If you want to import your bookmarks from your regular profile during that time, here's how:
You can use the Library dialog (Ctrl+Shift+b or "Show All Bookmarks") to access the Restore feature. The trick is knowing where to find your bookmark backups in your regular profile. After clicking Choose File... you can paste this into the file name space and press Enter to drill down to your profile folders:
%APPDATA%\Mozilla\Firefox\Profiles
The semi-randomly-named folder that has your last backup is usually the one ending with "default". Click into that one, then into the '''bookmarkbackups''' folder. Here you can pick the most recently updated file to restore.
Important: restoring a bookmark backup wipes any bookmarks currently in your active Firefox profile and replaces it with the contents of the backup file.
I think it's also reasonable to install AdBlock Plus and Web Developer, as those, by themselves, are unlikely to be the source of this seemingly rare problem. But I wouldn't add all your extensions at once to the new profile.

IGoogle home page not loading correctly after update to 10.0.1. Help please!

I use iGoogle as my home page. Since the update, the page displays minimal information, no gadgets or widgets, the theme heading or anything. Just the Google search box and some basic links. Howeer, if I click on Google Classic, that page displays correctly.
What's going on?

Perform the suggestions mentioned in the following articles:
* [https://support.mozilla.com/en-US/kb/Template:clearCookiesCache/ Clear Cookies & Cache]
* [[Troubleshooting extensions and themes]]
Check and tell if its working.
May not be related to your problem but some of your Firefox Plugins are out-dated
* Update All your Firefox Plugins -> https://www.mozilla.org/en-US/plugincheck/
* '''When Downloading Plugins Update setup files, Remove Checkmark from Downloading other Optional Softwares with your Plugins (e.g. Toolbars, McAfee, Google Chrome, etc.)'''

Will not Load WebSites after Upgrade today. Most of the plugins errored & were deemed incompatible with the new update.

Will not connect to ANY website - my other Browsers (IE & Safari are still working)
I downloaded & reinstalled Firefox but this didn't fix the problem.

A possible cause is security software (firewall,anti-virus) 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 and the plugin-container 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/Error_loading_websites
*https://support.mozilla.org/kb/Error+loading+web+sites

Javascript not loading content after updating from firefox 26 to 27

on my site i have a page on which javascript pre-loads the content and then shows it.
this thing was working perfectly fine on firefox 26 but soon as i updated to firefox 27
the content doesn't show after loading
Like i have an image for 'loading content' which first appears and then the loaded content
shows up. This image is still showing in version 27 but the content which shows after is not showing at all.
I inspected the page and the divs and content is there but its just not visible somehow.
Please help me with this problem .. im stuck with this if it doesn't show up. Thanks.

this doesn't solve the problem.
actually its working on all other browsers, the content is showing.
but its not working on firefox 27. what problem could it be which is preventing version 27 from loading the content when its working just fine on version 26 (i just checked it on a different system with version 26).
also there was an instance when the same content wasn't loading on version 26 also but it was a problem due to some pinterest script. once i removed it everything became just fine i.e. content started loading (on version 26). Now, if that helps in deducing the problem please help me out.

I have tried everything suggested and still cannot load websites after updating firefox

I have a Mac Pro. I just updated to Firefox 3.6.11. After that, I could not access most of my web sites. At first Yahoo.com would come up with just what looked like the basics - all information in separate lines and no pictures. Somehow that resolved itself. I can go to Yahoo and Facebook and a few other places, but most of the other websites come up with Server Not Found. At first I couldn't even get to Mozilla.com! I can get on these websites using my PC and Explorer. I have tried all of the suggestions on the Mozilla webpage and have checked out the firewall on my Mac.

->Uninstall your current Firefox
* [[Uninstalling Firefox]]
* Restart your system
-> Download & Install latest Firefox version 10.0.2
* [[Installing Firefox on Windows]]
* DON'T START FIREFOX
-> Create a New Firefox Profile
* [[Basic Troubleshooting#w_8-make-a-new-profile|Basic Troubleshooting - Make a new Profile]]
* Now start Firefox from the New Profile
Check and tell if its working.

Does not load pictures after updating with latest version

I have windows 7 and just updated the latest version of firefox. Since I did this, none of the pictures load in my email.

See:
*http://kb.mozillazine.org/Images_or_animations_do_not_load
If images are missing then check that you aren't blocking images from some domains.
*Check the permissions for the domain in the current tab in "Tools > Page Info > Permissions"
*Check that images are enabled: Tools > Options > Content: [X] Load images automatically
*Check the exceptions in "Tools > Options > Content: Load Images > Exceptions"

Cannot load websites after updating to AVG2012

Ican't get any websites through firefox -error message says cannot find server.Internet Explorer is OK but slow.

Which beta version of Firefox 8 are you using?
The current version is [http://www.mozilla.com/en-US/firefox/all-beta.html Firefox 8.0 b3] with buildID 20111011182523. If you use an older version then you should update via Help > About.
Also make sure that you allow Firefox in the firewall.
Start Firefox in <u>[[Safe Mode]]</u> 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

Firefox cannot load websites, but IE can, even after I tried all the ideas in the current articles on this topic as of March 10, 2011!

Firefox cannot load ANY websites, but IE can, even after I tried all the ideas in the current articles on this topic as of March 10, 2011!
One day it was fine, and the next day it stopped working! I have tried everything suggested under the topic "Firefox cannot load websites but other programs can."

You should e able to install FlashPlayer separately on IE and Firefox. So you may use Flash 11.3 on IE and 11.2 or 10.3 on Firefox.
Work from the administrator account. First of all sort out Firefox, use the Adobe uninstaller to uninstall Flash before reinstalling 11.2 Afterwards check that IE is ok, the Uninstaller may have changed that so you may need to reinstall Flash on IE.
* see instructions in [[flash 11.3 crashes]]
You are apparently using an outdated Firefox 8. That is not secure you should update to the latest Release Firefox 13 (or within a day or so Firefox 14)
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* see also [[Fix problems with RealPlayer add-ons]]
* a user ''blacksabath710'' recently posted a workaround in [/questions/931055] suggesting use of free software from http://www.dvdvideosoft.com/
P.S.
When you finish set Firefox's FlashPlayer not to upgrade, and until this issue is resolved do not follow suggestions from Adobe, or Plugincheck etc. to upgrade Flash.
Use this test page form Adobe in each browser and account to check Flash is working ok
* http://helpx.adobe.com/flash-player/kb/find-version-flash-player.html
The test page will display version information and error messages or a Flash animation to prove flash is working.

All website went "Not Found HTTP Error 404. The requested resource is not found." and the "Firefox cannot load websites but other programs can" page is not help

''dupe of https://support.mozilla.org/en-US/questions/928117''
all website went "Not Found HTTP Error 404. The requested resource is not found." and the "Firefox cannot load websites but other programs can" page is not helping in any ways

A possible cause is security software (firewall,anti-virus) 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 and the plugin-container 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
*http://kb.mozillazine.org/Error_loading_websites
You can try to reset (power off/on) the router.

Problem loading pages after update to Firefox 36

After updating from Firefox 35.0.1 to version 36, I am unable to load any pages in Firefox. (My internet connection is fine and I can use other browsers on the same computer.)
I've already tried many troubleshooting routines to fix the problem but none have worked. I've tried the instructions here:
https://support.mozilla.org/en-US/kb/fix-problems-connecting-websites-after-updating
(including troubleshooting my Firewall and proxy settings)
and here:
https://support.mozilla.org/en-US/kb/firefox-cant-load-websites-other-browsers-can
I've also tried the more general and extensive troubleshooting here:
https://support.mozilla.org/en-US/kb/troubleshoot-and-diagnose-firefox-problems
NONE of the suggestions in any of those pages solved the problem. Opening Firefox is Safe Mode did not help either. I was unable to load pages even in Safe Mode.
After following all of the steps in all of those troubleshooting guides and still failing, I uninstalled Firefox completely. (I followed all official directions on how to uninstall.) Then I re-installed Firefox VERSION 35.0.1. Firefox again worked fine with the older version.
Then I restored my profile from a backup using MozBackup. (My most recent backup was done when I had Ver. 35.0.1 installed.) Everything was still fine; Firefox worked fine and all of my settings were back to my preferences.
Finally, I again tried to update to version 36 - and the same thing happened! Unable to load any pages!
One other thing I've noticed: With version 36 installed, there is something wrong with my Options dialog. The first time I upgraded, I had only blank tabs for "General" and "Advanced"; with my second try, after updating to V 36 my Options dialog has blank tabs for "General" and "Search" (although Advanced is now showing.)
I am going to uninstall again, and again go back to V 35.0.1. But I would like to be able to update to the newest version. What can I do?
(I am a long-time Firefox user, and reasonably computer savvy. I have many extensions installed as I use Firefox as an important tool in my job as a website designer. I have Firefox extensively fine-tuned to my liking to optimize my work-flow.)
Any help appreciated!

Your message seems to have covered all the normal things we check.
When you tried using v36, did you have any add-ons? Have you tried;
'''https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles'''
'''Windows: 32-bit''' C:\Program Files\Mozilla Firefox\firefox.exe -p
'''64-bit''' C:\Program Files (x86)\Mozilla Firefox\firefox.exe -p
'''Mac:''' Navigate to '''/Applications/Utilities.''' Open the Terminal application.
In the Terminal application, enter the following:
/Applications/Firefox.app/Contents/MacOS/firefox-bin -p
'''Linux:''' In '''Terminal''' run: firefox –P
For users who have one or more builds from mozilla.org this will not work.
It would be best to have the full path so if you had placed the untared contents
in a folder in /home it would be /home/<username>/foldername/firefox/firefox –P
An easy way would be not to do it in a terminal but in say a launcher since
you have to point it to the firefox script in Firefox folder you can then add –P
on end. You can also have the exact "profilename" after the -P so Firefox
will start with that Profile.

Firefox cannot load websites, but other programs can. Listed guide/faq not effective.

I went through the FAQ guide for firefox not loading webpages, but after having changed both boolean setting in the about:config section of the firefox advanced settings, deleting and re-adding it to the program permissions list in my firewall (mcafee antivirus 2011), and even attempting to completely disable the firewall for a period of time, I am still unable to browse the internet on firefox. Internet explorer, however, does work.

Have you already seen [[firefox cannot load websites but other programs can]]
*What exactly happens, or does not happen and do you get any error messages ?
*Is it all websites you have a problem with, or only some ?
* What happens if you work offline, can you load web pages that are saved on your own computer ? <br> (save something with IE, -as HTML web page files - maybe this page, then try opening it with both Firefox and IE)
Can you use firefox to look at your local disk such as (depending on your setup) ''file:///C:/''
Try checking security settings, and security logs, is firefox being blocked ?

Firefox cannot load websites but other programs can

Firefox cannot load any webpages, but IE can.
I have tried everything suggested. This problem happened befoer I updated Firefox and did not resolve after I updated firefox.
I tried changing internet settings, disabling firewall, and even disabling IVP6, but nothing is working.

Have you already seen [[firefox cannot load websites but other programs can]]
*What exactly happens, or does not happen and do you get any error messages ?
*Is it all websites you have a problem with, or only some ?
* What happens if you work offline, can you load web pages that are saved on your own computer ? <br> (save something with IE, -as HTML web page files - maybe this page, then try opening it with both Firefox and IE)
Can you use firefox to look at your local disk such as (depending on your setup) ''file:///C:/''
Try checking security settings, and security logs, is firefox being blocked ?

Firefox won't start after updating

Firefox recently completed an auto-update, however now the software won't load.
If I click on the Firefox icon, I get the Windows egg timer for about 10 seconds, then the pointer reverts to normal and nothing happens. If I open Task Manager at the same time, when I click on the Firefox icon, I see the application listed for approximately 5 seconds, then it's removed from the list.
I have tried running in compatibility mode, as well as removing and re-installing, neither of which have helped.
Can you advise, please ?

It is possible that your security software (firewall, anti-virus) 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 and the plugin-container 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
*https://support.mozilla.org/kb/fix-problems-connecting-websites-after-updating
Boot the computer in Windows Safe Mode with network support (press F8 on the boot screen) as a test to see if that helps.

Firefox stops loading pages after trying to open a heavy page

firefox stops loading pages after trying to open a page with alot of pictures etc, with big size. it just keeps on loading pages with no result.
my internet is fairly low speed so i take my time but this happened each time i tried to open such sites.
even when i close that '''tab''' and try to open just '''google.com''' , it wont load.
its solved after closing and opening firefox again . but happens again if i try to open the same heavy site

Which security software (firewall, anti-virus) do you have?
A possible cause is security software (firewall,anti-virus) 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 and the plugin-container 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
try to boot the computer in Windows Safe mode with network support (press F8 on the boot screen) as a test to see if that helps.

Firefox Not Loading Websites After Update

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