Why do I constantly receive a pop up telling me "this URL is not valid and cannot be loaded?"

Why do I constantly receive a pop up telling me "this URL is not valid and cannot be loaded?" How can I stop this pop up?????? HELP!!!!!
== This happened ==
Every time Firefox opened
== A week ago.

Do you have the Google Toolbar installed? If so, go to '''Tools > Add-ons''' > Extensions''' Select the Google Toolbar, click '''Disable__ then restart Firefox.

Similar Messages

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    I have version 3.6.13 Firefox. I have uninstalled and reinstalled, but still keep getting an error message saying that The URL is not valid and cannot be loaded. This happens even when I am on the web page, but the message continues to keep popping up.

    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]]
    If it does work in Safe-mode then disable all extensions and then try to find which is causing it by enabling one at a time until the problem reappears.
    * Use "Disable all add-ons" on the [[Safe mode]] start window to disable all extensions.
    * Close and restart Firefox after each change via "File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit")

  • Why do I keep getting an error message that reads "The URL is not valid and cannot be loaded."

    Whenever I click on a link that opens a new tab using "about:tab", an error pops up. The error box is titled "Alert" and the message reads "The URL is not valid and cannot be loaded."
    However, once I click OK, the page loads just fine. At first, I thought it might be one of my add-ons (Iuse a bunch), but it still occurs after restarting in Safe Mode. Any thoughts?
    I can even create the problem without clicking on a link inside a page if I simply type about:tab in the address bar.
    I am using Firefox 12.0

    Wow! I actually solved this on my own. I didn't find any thread that helped, but after reading a few, I figured poking around in about.config would help... and it did!
    Here is how I solved the problem:
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    # Closed the tab.
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    When we start the internet or navigate to a new page, a new tab opens with the following alert: "The URL is not valid and cannot be loaded." We "x" out of it, but a new tab, with the same alert appears. The problem occurs again when we try to navigate to another web page. A real nuisance. We've scanned the computer but found nothing but Adware cookies.
    == This happened ==
    Every time Firefox opened
    == 5/20/10

    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")

  • Why do i keep getting an Alert message saying "The URL is not valid and cannot be loaded "?

    Why do i keep getting an Alert message saying "The URL is not valid and cannot be loaded "?
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    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]]
    If it does work in Safe-mode then disable all extensions and then try to find which is causing it by enabling one at a time until the problem reappears.
    * Use "Disable all add-ons" on the [[Safe mode]] start window to disable all extensions.
    * Close and restart Firefox after each change via "File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit")

  • Why do i keep getting box: The URL is not valid and cannot be loaded.

    When changing web sites, a dialog box pops up every time Saying "The URL is not valid and cannot be loaded".

    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).
    * Don't make any changes on the Safe mode start window.
    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.
    * Use "Disable all add-ons" on the [[Safe mode]] start window to disable all extensions.
    * Close and restart Firefox after each change via "File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit")

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    well after 4 days and no support help, I said screw it. Good bye FireFox, your excellent customer service on this issue drove me to install Google Chrome. Just like Opera's piss poor customer support drove me to FireFox, now Firefox is driving me elsewhere.
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    Hi,
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    Useful links:
    [https://support.mozilla.com/en-US/kb/Options%20window All about Tools > Options]
    [http://kb.mozillazine.org/About:config Going beyond Tools > Options - about:config]
    [http://kb.mozillazine.org/About:config_entries about:config Entries]
    [https://support.mozilla.com/en-US/kb/Page%20Info%20window Page Info] Tools (Alt + T) > Page Info, Right-click > View Page Info
    [https://support.mozilla.com/en-US/kb/Keyboard%20shortcuts Keyboard Shortcuts]
    [https://support.mozilla.com/en-US/kb/Viewing%20video%20in%20Firefox%20without%20a%20plugin Viewing Video without Plugins]
    [http://kb.mozillazine.org/Profile_folder_-_Firefox Firefox Profile Folder & Files]
    [https://developer.mozilla.org/en/Command_Line_Options#Browser Firefox Commands]
    [https://support.mozilla.com/en-US/kb/Basic%20Troubleshooting Basic Troubleshooting]
    [https://support.mozilla.com/en-US/kb/common-questions-after-upgrading-firefox-36 After Upgrading]
    [https://support.mozilla.com/en-US/kb/Safe%20Mode Safe Mode]
    [http://kb.mozillazine.org/Problematic_extensions Problematic Extensions]
    [https://support.mozilla.com/en-US/kb/Troubleshooting%20extensions%20and%20themes Troubleshooting Extensions and Themes]
    [https://support.mozilla.com/en-US/kb/Troubleshooting%20plugins Troubleshooting Plugins]
    [http://kb.mozillazine.org/Testing_plugins Testing Plugins]

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    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).<br />
    See [[Troubleshooting extensions and themes]] and [[Troubleshooting plugins]]<br />
    <br />
    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.<br />
    You can use "Disable all add-ons" on the [[Safe mode]] start window to disable all extensions.<br />
    You have to close and restart Firefox after each change via "File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit")<br />

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    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).
    * Don't make any changes on the Safe mode start window.
    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.
    * Use "Disable all add-ons" on the [[Safe mode]] start window to disable all extensions.
    * Close and restart Firefox after each change via "File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit")

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    Start Firefox in <u>[[Safe Mode]]</u> to check if one of the extensions 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
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    * https://support.mozilla.com/kb/How+to+set+the+home+page - Firefox supports multiple home pages separated by '|' symbols
    * http://kb.mozillazine.org/Preferences_not_saved

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    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).<br />
    See [[Troubleshooting extensions and themes]] and [[Troubleshooting plugins]]<br />
    <br />
    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.<br />
    You can use "Disable all add-ons" on the [[Safe mode]] start window to disable all extensions.<br />
    You have to close and restart Firefox after each change via "File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit")

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