Firefox won't open any website and displays an Invalid URL at all websites.

Until now, I had no trouble with Firefox but everytime the new Firefox updated, everything came up as Invalid URL. For about a week I realised I could 'restore previous versions' of the file every day but now that isn't an option and I cannot access any website.
Can anybody help me?

hello christine, since this can sometimes be caused by malware active on a system, please run a scan with different security tools like the [http://www.malwarebytes.org/products/malwarebytes_free free version of malwarebytes], [http://www.bleepingcomputer.com/download/adwcleaner/ adwcleaner] & [http://www.microsoft.com/security/scanner/default.aspx microsoft safety scanner].
[[Troubleshoot Firefox issues caused by malware]]

Similar Messages

Firefox won't open any more and won't reinstall

My Firefox browser suddenly won't open at all. I tried to reinstall but when I clicked the 'run' button, all information disappeared but nothing happened. I went to my 'downloads' to try again but the same thing happened. It will not reinstall. I have an HP Envy laptop with windows 8.

hello christine, since this can sometimes be caused by malware active on a system, please run a scan with different security tools like the [http://www.malwarebytes.org/products/malwarebytes_free free version of malwarebytes], [http://www.bleepingcomputer.com/download/adwcleaner/ adwcleaner] & [http://www.microsoft.com/security/scanner/default.aspx microsoft safety scanner].
[[Troubleshoot Firefox issues caused by malware]]

Mac won't open pages in browsers. Chrome and Firefox won't open any pages - Safari will only open a selected few.

I've had some strange browser issues, with Conduit being added to Chrome (which I've tried to remove via the browser settings). Chrome will open my Gmail account but no ther pages. Firefox won't open anything. Safari opens a few pages (this forum thankfully) but is very selective.
Google is returning results to me via Google.es rather than Google.co.uk
I can use all browsers freely on other devices on home network (although Google.es has popped up on my iPhone now). I've run anti-virus software which hasn't picked up any problems. I've tried uninstalling Chrome and Firefox, but am unable to do so.
Any help or guidance would be really, really appreciated.
I'm running the most recent version of Mavericks on 2012 iMac.

Hi,
First of all click Safari/Reset Safari, next click Safari/Preferences/Extensions and turn off extensions. The re-test
If the problem persists, try using safari in safe mode:
Use this link to see how to do this:
http://support.apple.com/kb/HT1564
If Safari works ok in safe mode, then your problem points to something 3rd party related.
Have a look at this:
http://support.apple.com/kb/TS3230?viewlocale=en_US
I hope this helps

Firefox will not open any website and I have done what your help section has instructed. after it updated quit working.

After Firefox updated I cannot open any website but explorer can. I have done everything your help site suggested. I like firefox and would like to keep using it. Can you help? I am using windows vista 64 bit operating system.

After upgrading, sometimes your firewall will not recognize the new Firefox version and, therefore, not allow it to access the internet. To remedy that situation,
#you must remove Firefox from your firewall's allowed applications list,
#then restart firefox, go to a website, the firewall will detect the new Firefox version and
#then give the necessary permissions for your firewall to allow Firefox access to the internet
Click here for more information --> [https://support.mozilla.com/en-US/kb/Cannot%20connect%20after%20upgrading%20Firefox Cannot connect after upgrading Firefox]
'''If this reply solves your problem, please click "Solved It" next to this reply when signed-in to the forum.'''

Firefox won't open any sites that I've never been to before

Firefox will not open any new sites that I have never been to before nor will it let me search for any questions that are new on the little search feature on the top right of the screen. All sites that have been previously visited are fine - for new ones I just get the little circle that goes round and round (sorry, I'm not really computer literate) until it finally tells me that it has timed out. I can get to these new sites just fine through explorer. I may remember incorrectly but not long ago there was an update for something (may have been java or google) and afterwards a box popped up and I think I checked something that I thought I was supposed to check but now think I wasn't - but have had this problem ever since.

The Reset Firefox feature can fix many issues by restoring Firefox to its factory default state while saving your essential information.
Note: ''This will cause you to lose any Extensions, Open websites, and some Preferences.''
To Reset Firefox do the following:
#Go to Firefox > Help > Troubleshooting Information.
#Click the "Reset Firefox" button.
#Firefox will close and reset. After Firefox is done, it will show a window with the information that is imported. Click Finish.
#Firefox will open with all factory defaults applied.
Further information can be found in the [[Reset Firefox – easily fix most problems]] article.
Did this fix your problems? Please report back to us!

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

My Firefox won't load any websites, but other web browsers will. I have tried following the proxy help to fix this, with no luck. What can I do next?

Any website I try to visit using Firefox won't load, it just keeps saying that it is unable to connect. I tried other web browsers, and they work no problem. I tried following the proxy steps provided, but did not help.

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

How to create a plugin to open a pop up on right click (using context menu) of any link on any site and display the link url in the pop up

We are developing a Plugin with the specific purpose to display the URL to which any link redirect to on any website.
This URL should appear in the pop up when the user right clicks and selects the "show URL" option in the context menu.
Can some one please help us either to find such plugin (except firebug) or guide us how to develop such a plugin.

Look for related articles here: 
http://developer.mozilla.org/en/

It won't open any website, no matter what i type in, in ff 4 beta 5

i downloaded ff 4 beta 5 this morning, and at the end of the installation, (where they check compatability of add-ons) a pop-up said
The operation cannot be completed because of an internal failure. A secure network communication has not been cleaned up correctly.
and when i opened the ff beta, it won't load any pages...
its just in the beta... my regular ff (3.6.9) is fine.

This is a known bug and it is being worked on.
The relevant bug report is [https://bugzilla.mozilla.org/show_bug.cgi?id=588511 Bug 588511], but please do not comment on the bug report.

After latest update a few minutes ago, Firefox won't open any web pages.

I was on a local web page run by a local server on my intranet. Firefox was not open. I opened it (the last time it worked successfully was a few hours ago). It did an update. After the update, it tried to open a Firefox web page - that failed. The local web page I was on would not open either. The web pages still work from Internet Explorer.

Can you start Firefox in [[Safe Mode|Safe Mode]] by holding down the Shift/Options key?
Start Firefox in [[Safe Mode|Safe Mode]] to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem.
*Switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance
*Do NOT click the Reset button on the Safe Mode start window
*https://support.mozilla.org/kb/Safe+Mode
*https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes
You can try to reinstall Firefox.
Do a clean reinstall and delete the Firefox program folder before (re)installing a fresh copy of the current Firefox release.
*Download the full Firefox installer and save the file to the desktop https://www.mozilla.org/en-US/firefox/all.html
If possible uninstall your current Firefox version to cleanup the Windows registry and settings in security software.
*Do NOT remove "personal data" when you uninstall your current Firefox version, because this will remove all profile folders and you lose personal data like bookmarks and passwords including data in profiles created by other Firefox versions.
Remove the Firefox program folder before installing that newly downloaded copy of the Firefox installer.
*(32 bit Windows) "C:\Program Files\Mozilla Firefox\"
*(64 bit Windows) "C:\Program Files (x86)\Mozilla Firefox\"
*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.
*http://kb.mozillazine.org/Uninstalling_Firefox
Your bookmarks and other personal data are stored in the Firefox profile folder and won't be affected by an uninstall and (re)install, but make sure NOT to remove personal data when you uninstall Firefox as that will remove all Firefox profile folders and you lose your personal data.
If you keep having problems then also create a new profile.
*http://kb.mozillazine.org/Profile_folder_-_Firefox
*http://kb.mozillazine.org/Profile_backup
*http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Clean_reinstall
Do a malware check with several malware scanning programs on the Windows computer.
Please scan with all programs because each program detects different malware.
All these programs have free versions.
Make sure that you update each program to get the latest version of their databases before doing a scan.
*Malwarebytes' Anti-Malware: http://www.malwarebytes.org/mbam.php
*AdwCleaner: http://www.bleepingcomputer.com/download/adwcleaner/ http://www.softpedia.com/get/Antivirus/Removal-Tools/AdwCleaner.shtml
*SuperAntispyware: http://www.superantispyware.com/
*Microsoft Safety Scanner: http://www.microsoft.com/security/scanner/en-us/default.aspx
*Windows Defender: http://windows.microsoft.com/en-us/windows/using-defender
*Spybot Search & Destroy: http://www.safer-networking.org/en/index.html
*Kasperky Free Security Scan: http://www.kaspersky.com/security-scan
You can also do a check for a rootkit infection with TDSSKiller.
*Anti-rootkit utility TDSSKiller: http://support.kaspersky.com/5350?el=88446
See also:
*"Spyware on Windows": http://kb.mozillazine.org/Popups_not_blocked

Firefox won't open any of my requested web sites, instead I am redirected to full page advertising (e.g.- Phoenix University, etc.

I've also tried opening Explorer directly and the same problem exists.

My Remote Site root directory is entered as /www/. I entered it as /www/ rather than simply /www because I was directed to by Your-Site.com Support.
I don't think the syntax is particularly crucial.
All they really say is
"When you connect via FTP most clients will log into the "root" or "/" directory. You must change to the "/www" directory before you start uploading.
Most FTP clients have a section that displays the remove server - when you first login you should see a "/www" directory; if you do, try double clicking it to put yourself into the www directory. If you don't see a www directory check to see if you're in it already.
Once you're in your www directory you should upload your files."
http://accounts.your-site.com/support/index.php?_m=knowledgebase&_a=viewarticle&kbarticlei d=109&nav=0
Provided you're pointing DW to the www directory on the remote site, the setup is correct.
Have you spoken to your host about why the site is not showing up?

Firefox won't load any websites. Active tab reads "(untitled)"

I have deleted and reload firefox and still have the problem. When I try to open firefox the page comes up blank white and indicates "done" in lower left corner. The active tab in upper right reads (untitled).

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

Safari won't open any website

Network diagnostics say that WiFi is good, network settings are good, ISP is good, etc. And other devices on my network are connecting to the web without issues. But my macbook air will not connect to any website.

I get a message that Safari cannot access the webpage because the server is not responding. However, all my other devices are connecting with no problem. I just got off the phone with Apple Support and after doing some trouble-shooting and determining that the mba is fine, he asked me to cycle power on the modem and router. After doing this, the mba connected to the internet with no problem. I asked him why would the mba need the router to reboot if my other devices are ok? He said the mba needed to reset its connection. It's still a mystery to me, but at least now I know what to do.
BTW, OS is 10.7.4 and Safari is 6.0.
Thanks for replying. Maybe my experience will help someone else.

Google Chrome and Firefox won't open any sites. Internet explore can.

Internet Explorer will run any sites. After installing google chrome and firefox its opens the browser but then when i enter a site, any site, it just wont go... It's not giving me an error message... i push the "enter" key and the busy locator, the circle thing that rotates to indicate the page is loading. it just pops for like 1 sec still remains on the main page.

Hello justinmendoza89, check if your [https://support.mozilla.org/en-US/kb/configure-firewalls-so-firefox-can-access-internet#os=win7&browser=fx16 firewall] or other security software(antivirus, antispyware) prevent firefox access .
[https://support.mozilla.org/en-US/kb/configure-windows-firewall-allow-firefox-access#os=win7&browser=fx16 Configure Windows Firewall to allow Firefox access to the Internet]
thank you

All of a sudden it won't open any websites, but Explorer works, so why doesn't Firefox? I hate Explorer, I want my Firfox to work. I tried to re-download it but I suck at all this ......

In other words, it was working fine, then it would not launch any more sites. I tried Explorer and it works, so I know it's not the overall internet connection, just the Firefox piece. I am worried that I accidentally clicked on something to block it, but I can't find anything like that to change the settings on. I use Windows. So is there something you can get me to click on to be sure I'm not blocking it somehow by mistake? I'm famous for accidentally clicking on something that nobody else would ever have a problem with, but somehow my fingers find that one combo of buttons and then the computer is messed up. Help!

* "Clear the Cache": Tools > Options > Advanced > Network > Offline Storage (Cache): "Clear Now"
* "Remove the Cookies" from sites that cause problems: Tools > Options > Privacy > Cookies: "Show Cookies"
Start Firefox in [[Safe Mode]] to check if one of the add-ons is causing the problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).
* Don't make any changes on the Safe mode start window.
See:
* [[Troubleshooting extensions and themes]]
* [[Troubleshooting plugins]]

Firefox won't open any website and displays an Invalid URL at all websites.

Similar Messages

Maybe you are looking for