Firefox cannot load websites when Internet Explorer can.

I have read your article about this but I cannot follow your instructions as the only "tools" I can find to click on is in IE and brings down "internet options", which has an "advanced" tab (not a panel) and no settings tab. Am I misssing something? I am having the same problem on my desk top! Both have just occured in the last 2w. Thanks; Robin

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.org/kb/Server+not+found
*https://support.mozilla.org/kb/Firewalls

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Firefox 9 cannot load websites but internet explorer 9 can

The title explains it all really. I have read and done all thats in the "Firefox cannot load websites but other programs can" pages regarding firewalls, malware and others.

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.org/kb/Server+not+found
*https://support.mozilla.org/kb/Firewalls

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 ? (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 ? (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 ?

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.

Firefox cannot load websites but other browser can

background - family community home pc...mozilla worked great for the longest time (along side IE)...all of a sudden mozilla can't connect to any website...IE always can (yuk)
troublshooting steps (still can't connect to web w/firefox):
1. Removed Mozilla, re-installed, same results
2. Searched for all mozilla folders. Deleted two folders and also daughter's mozilla iphone folder. Removed Mozilla, re-installed, set connection to "no proxy", same results.
3. Ran "House Call" - no malware found.
Help! do not like IE!

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 ? (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. I followed the problem solving steps, however I can't access to any web site.

I followed the following step (in spanish):
Configuración de la conexión para Firefox
Si te conectas a Internet a través de un servidor proxy que tiene problemas de conexión, no podrás cargar páginas web. Para comprobar la configuración del proxy de Firefox:
1.En la parte superior de la ventana de Firefox, en la barra de menú, haz clic en el menú Herramientas, y selecciona Opciones....
2.Selecciona el panel Avanzado.
3.Selecciona la pestaña Red.
4.En la sección Conexión, haz clic en Configuración... .
5.Cambia la configuración del proxy:
◦Si no te conectas a Internet a través de un proxy (o no sabes si te conectas a través de uno), selecciona Sin proxy.
◦Si te conectas a Internet a través de un proxy, compara la configuración de Firefox con la de otro navegador (como Internet Explorer. Consulta Guía de configuración de proxy de Microsoft) (O Safari. Consulta Guía de configuración de proxy de Apple).
1.Cierra la ventana de Configuración de conexión.
2.Haz clic en Aceptar para cerrar la ventana de OpcionesHaz clic en Cerrar para cerrar la ventana de preferenciasCerrar la ventana de preferencias

You need to allow for the loopback connection in Firefox, as an "outgoing" connection.

Firefox cannot load websites but other programs can; and when I click on this link...like so many others... Firefox responds: "Sorry, we couldn't find the page you were looking for. Please, try searching our site using the form below."

sorry, I'm not going to list any more sites...fix this program, or lose a user since Navigator v1.0

Clear the cache and the cookies from sites that cause problems.
"Clear the Cache":
* Tools > Options > Advanced > Network > Offline Storage (Cache): "Clear Now"
"Remove Cookies" from sites causing problems:
* Tools > Options > Privacy > Cookies: "Show Cookies"

Firefox cannot load websites when connect/disconnect from any VPN connection

I am consistently uses OpenVPN and RamsesVPN connectivity. But whenever i switch between the VPN connectivity or connect into any VPN or disconnects existing VPN connectivity. My Firefox Browser is unable to load new webpages/Refresh existing open TABS.
In order to restore, i have to restart my Browser each time, whereas i am not facing this problem with Chrome.
I am running with Windows 7 Enterprise edition, and latest Firefox version.
Is there any method to avoid these restarts ?

Hi, this bug is old, but it has useful info for VPNs
See for reference Bug 702111
And there are built in features on the about:config file that you can tweak the number of connections and allowing pipe lining: [http://support.vpnsecure.me/articles/ssh-tunnelling-proxy-troubleshooting/tweaking-firefox-for-best-performance-security Third party information on these connections]
Other suggestions I have seen are to add bookmarks while logged into either vpn. (For example, bookmark the frequent sites you use in either vpn in separate folders)
In Firebug, when you connect or refresh the page when moving from one VPN to the other, do you see a termination in the connection to the first vpn?

Firefox cannot load websites but other programs can (link to solution is dead)

Firefox either takes a long time to load some pages or simply does not load them, ever. I've just tested it and tried in IE9 to load one of those pages that FF never loads. IE9 loaded it immediately. Browsing through your FAQ pages, i found a question about this problem, but when i click it, it turns out the link is dead

The default of the pref network.http.max-connections has been increased from 30 to 256 in Firefox 6+ versions.
You can try to decrease the value of the pref network.http.max-connections from 255 to a more modest setting like 30 as used in Firefox 3 versions.
*https://support.mozilla.com/kb/Firefox+never+finishes+loading+certain+websites

All help posted for Firefox cannot load websites but other programs can fail, now what?

I have tried all the things listed but they made no difference at all.
I have no problem with IE. I have been to this site before and it is a bookmarked site.
This problem only came with the last update that never saved any of my search engines either.
Can go to some sites but not others and I have been there before.
Is it time to dump Firefox?
EDIT: One of the sites is speedtest.net, how crap is that?

Big FAIL there as well. I have already tried all that.
I also ran Moz Backup and that failed to help.
I can google speedtest but when I click on the result in the search it times out.
If I try from my bookmarks it also times out.
I have about 80 bookmarks I use all the time
I won't return to Firefox if this is the crap I get after updates.
Not the first time I have had to start from the beginning.
Why do they release this crap if it is not ready for us to use?
I have already tried all the things listed as well as increasing the time out period. That just took longer to tell me it had timed out. RUBBISH

Why is the link 'Firefox cannot load websites but other programs can" not working?

This link appears to be broken.

Works fine for me: https://support.mozilla.com/en-US/kb/Firefox%20cannot%20load%20websites%20but%20other%20programs%20can
What do you get when you try?
'''If this reply solves your problem, please click "Solved It" next to this reply when signed-in to the forum.'''
Not related to your question, but...
You need to update some plug-ins:
*Plug-in check: https://www-trunk.stage.mozilla.com/en-US/plugincheck/
*Shockwave Flash (Adobe Flash or Flash): [https://support.mozilla.com/en-US/kb/Managing%20the%20Flash%20plugin#w_updating-flash Updating Flash in Firefox]
*Next Generation Java Plug-in for Mozilla browsers: [https://support.mozilla.com/en-US/kb/Using%20the%20Java%20plugin%20with%20Firefox#w_installing-or-updating-java Installing or Updating Java in Firefox]

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)
You may also encounter problems relating to use of RealPlayer software and that software may affect use of FlashPlayer 11.3
* 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.

Firefox cannot load websites(facebook) but other programs can

after i have upgrade firefox cannot load websites(facebook) but other programs can, i cannot see my friend whose is online,and cannot chat with them, cannot share video ....what should i do?

A good place to ask advice about web development is at the mozillaZine Web Development/Standards Evangelism forum. 
The helpers at that forum are more knowledgeable about web development issues. 
You need to register at the mozillaZine forum site in order to post at that forum. 
See http://forums.mozillazine.org/viewforum.php?f=25

Firefox cannot load pages that other browsers can, but the 'help' page for this issue did not fix the problem.

I am troubleshooting an issue occurring on a family member's pc. Immediately after changing their "search" settings from "Yahoo search" to "Google search", they found that Firefox was unable to load any webpages. After troubleshooting the problem, I found the "Firefox can't load websites but other browsers can" help page, and attempted each of the solutions listed. None of those solutions fixed the issue. Also, I uninstalled and re-installed Firefox; the issue persists. However, the 'new' version of Firefox remembered the tabs left open when the 'old' version was deleted, so some temporary files likely persisted.
Are there any other steps that can be taken, or is Firefox on this computer no longer an option?

Start with this;
Type '''about:preferences#advanced'''<Enter> in the address bar.
Under '''Advanced,''' Select '''Network.'''
Look for '''Configure How Firefox Connects''' and press the '''Settings''' button.
Check the settings.
Some problems occurs when your Internet security program was set
to trust the previous version of Firefox, but no longer recognizes your
updated version as trusted. Now how to fix the problem: To allow
Firefox to connect to the Internet again;
* Make sure your Internet security software is up-to-date (i.e. you are running the latest version).
* Remove Firefox from your program's list of trusted or recognized programs. For detailed instructions, see
'''[https://support.mozilla.org/en-US/kb/configure-firewalls-so-firefox-can-access-internet Configure firewalls so that Firefox can access the Internet.]''' {web link}
If there is still a problem, go to that computer and do this;
Type '''about:support''' in the address bar and press '''Enter.'''
Under the main banner, press the button; '''Copy Text To Clipboard.'''.
Then in the reply box at the bottom of this page,
do a right click in the box and select '''Paste.'''
This will show us your system details.
'''No Personal Information Is Collected.'''

Firefox cannot load websites when Internet Explorer can.

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