Firefox wont load websites, other browsers can. Premature FIN,ACK?

Whenever I load a webpage in FF, I get "server reset connection".
Any other browser on the same machine loads any webpage fine. FF on another machine on the same network is fine.
I tried:
* Disabling the firewall
* Uninstalling and reinstalling FF (even older versions)
* running FF in safemode
* Disabling any plugins
* Creating a new profile
* Logging in as another user
To no avail.
BUT: If I debug with fiddler2 - FF works fine. As soon as I stop fiddler2 from capturing, FF works no more.
I tried Wireshark, and this is what I see:
* 1 0.000 remote-collab > http [SYN] Seq=0 Win=65535 Len=0 MSS=1260
* 2 0.023 http > remote-collab [SYN, ACK] Seq=0 Ack=1 Win=5840 Len=0 MSS=1380
* 3 0.023 remote-collab > http [ACK] Seq=1 Ack=1 Win=65535 Len=0
* 4 0.033 remote-collab > http [FIN, ACK] Seq=1 Ack=1 Win=65535 Len=0
* 5 0.056 http > remote-collab [FIN, ACK] Seq=1 Ack=2 Win=5840 Len=0
* 6 0.056 remote-collab > http [ACK] Seq=2 Ack=2 Win=65535 Len=0
The trouble ssems to be that 4 packet. Something is sending a FIN package about 0.023 seconds after the connection is established. Any Idea what it could be? Is FF being stubborn? (note: I get the same with a disabled firewall)
- Ole

See if anything here helps you. The 17 most popular firewall programs are covered. And the Enum Process program is explained a bit, along with a download link to that program. It is a good program written by a Firefox support helper over at MozillaZine to help Firefox users determine what they have running as far as firewalls and other security programs go. 
http://support.mozilla.com/en-US/kb/Firewalls
The biggest problem with Firefox and firewalls is that when Firefox is updated it almost always comes with a new '''firefox.exe''' file, which is what launches Firefox and what the firewall looks for as being different than expected. Most other programs don't change their "executable" file almost ever, so the firewall is never challenged. Plus some firewall programs aren't updated in a timely manner and don't recognize the new executable automatically and need the users intervention ''(or jacking around, as I see it)''.
That's about the limit of my experience with software firewalls. I use an IP tables hardware firewall on my LAN, and only ever used a software firewall on a laptop I had a few years ago - and only because it was used off of my LAN. My current netbook uses Linux and I don't see the need for a software firewall, yet.

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Firefox wont load but other browsers will

from the start page firefox wont load websites-my other browsers work just fine

hi, such issues are often caused by a firewall/security software which doesn't recognize & therefore blocks new firefox versions. please remove all program rules for firefox from your firewall and let it detect the new version of the browser again.
[[Fix problems connecting to websites after updating Firefox]]

Firefox wont load pages, other browsers do, firefox solutions did not work?

Hello!
I have Windows 7, and run Firefox Beta 36.0. I have it set to update automatically, and it seems there was an update yesterday, and now Firefox will not load any pages.
I have tried changing the proxy settings, configuring the firewall, and restarting my computer; none of them worked. :(
After configuring the firewall, there are now two Mozilla Firefox programs shown (in the allowed programs and features list)? I had made sure to delete, then re-add them, but it made two Mozilla Firefoxes in the list appear. Not sure if this effects anything though.

Ah, I figured it out by changing the firewall settings on Norton to allow for firefox and the firefox add-on, instead of auto. Hopefully putting the setting on allow instead of auto wont make me vulnerable to security threats!
I was about to cry haha, Chrome wouldn't download as I wanted to use it until I could find a solution, and I though I would be stuck with IE for forever. xD
Thanks, hopefully this will help others!

Hi, my firefox wont load websites but other browsers like internet explorer , chrome can . This problem occurs when i use my company's router ?

my company have two internet connection ; 1 is dsl connection , firefox working fine on it ; 2 is my company's own cisco 2911 cisco router with internet connection , firefox wont loading pages except just the homepage of google.com and that's it , and the problem is that whole company is using company's internet connection which means that firefox is death for all of us.
Reseting firefox works but just for one day and after that it stuck again. also tried other solutions like malware removal , re installing firefox etc but not worked
Thanks for any kind of solution

thanks alot for your quick reply fredmcd
i have searched alot on the internet and got the solution , it was a thread known as "l.yimg.com". every time i open a website ,it stucks in "transferring data from l.yimg.com" , so what i did is;
1) End the process "random.exe" from task manager
2) Delete all the history and cookies of the infected browser.
3) Opened Registry Editor and delete these malicious entries:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\ L.yimg.com
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\L.yimg.com \DisplayName L.yimg.com
HKEY_USER\.default\environment\temp
HKEY_USER\s-1-5-18\environment\temp
HKEY_USER\ s-1-5-19\environment\temp and so on
4) Search those malicious files on your hard disk and completely delete all of its components.
%AllUsersProfile%\{random}
%AllUsersProfile%\Application Data\.dll
it really worked for me , if anyone have the same problem then try it , hopefully it will work for you too.
[[Knowledge Base Article|http://rescueyourcomputer.blogspot.com/2013/11/remove-lyimgcomeffectively-get-rid-of.html]]
http://blog.mitechmate.com/remove-l-yimg-com-popup/]
http://blog.teesupport.com/how-to-stop-l-yimg-com-pop-up-guide-to-remove-l-yimg-com-redirect-virus/

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 but IE can

I have Firefox 8.
I am running vista.
Firefox should load the homepage, Set to aol.com, but it won't load anything.
The browser just shows a white dotted box for an icon.
It says Connecting.. for 3 seconds and stops.
IE can open every website.
I have a stable internet connection.
I have allowed Firefox through my firewall.
Just need help loading any page possible.

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 wont load websites

Hi, My firefox browser has stopped working and I dont know why. I went to a strange foriegn website at the descresion of an ebay seller to download a driver for a controller I had bought. Shortly after that I saw a message from my Norton Security that gmpopem264.dll was safe which I thought was strange. So I located that file and deleted it. Later I found out that I needed it for Firefox to work. And at that point my browser stopped working. I can open Firefox but it wont let me go to any websites. It just continually loads and doesn't even display an error message. then if I close out of the browser I can't reopen and get the message "Firefox is already open in another instance" with an option to close firefox, but when I push the button it doesn't close and I can't open firefox again unless I restart my computer. I see that it is still running in task manager but when I try to end the process nothing happens.
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''Foxalive [[#question-1051665|said]]''
<blockquote>
Shortly after that I saw a message from my Norton Security that gmpopem264.dll was safe which I thought was strange. So I located that file and deleted it
</blockquote>
Norton said the file was safe, and you deleted it ? ! ?
What would you have done if Norton said the file was bad?
Did you find out what that file was for?
You should not delete any program file unless you want to remove
it's whole setup. I am sorry if it looks like I am talking down to you,
but doing such things could end up with the computer making a
trip to a repair site. $$$$$$$$$$$$$$$$$$$$$
''Saurav [[#answer-702813|said]]''
<blockquote>
do not forget to remove profiles of firefox.
</blockquote>
Wrong! Wrong! Wrong!
In such cases, IF the profile is the problem, have the user create a new
profile. Once the issue is gone, the old profile can be rebuilt in the new.

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.
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Start with this;
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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.'''.
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A good place to ask advice about web development is at the mozillaZine Web Development/Standards Evangelism forum. 
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You need to register at the mozillaZine forum site in order to post at that forum. 
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Firefox cannot load websites but other programs can

Firefox cannot load any webpages, but IE can.
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Firefox cannot load websites but other browser can

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

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See:
*https://support.mozilla.org/kb/Server+not+found
*https://support.mozilla.org/kb/Firewalls
*http://kb.mozillazine.org/Error_loading_websites
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Firefox wont load websites, other browsers can. Premature FIN,ACK?

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