When i am open a new window every time it showing TypeError: Components.classes[cid] is undefined

Q . TypeError: Components.classes[cid] is undefined. this create problem for me every time , so please help me to solve this problem.

That indicates that you are using an add-on that is not compatible with Firefox 4. For details of how to troubleshoot this to find out what one is causing the problem see https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes

Similar Messages

  • I install compatibility reporter in my Mozilla firefox 5 running under Windows 7 and get message - TypeError: Components.classes[cid] is undefined, what is causing it please?

    I am having to install Compatibility reporter so that Google toolbars will work. This used to be ok, but now I am getting the message-TypeError: Components.classes[cid] is undefined. I am running under Windows 7 any idea how |I can get round it please?

    If you force an extension to install by overriding the compatibility then the result can be unpredicted.<br />
    The extension may work or may not work or cause error messages like you posted.<br />
    You always need to be careful with forcing extensions to install.
    You may need to check extensions.checkCompatibility prefs on the <b>about:config</b> page.
    * http://kb.mozillazine.org/extensions.checkCompatibility

  • When I open firefox 4 or a new window I get an error message "components.classes[cid] is undefined" how do I fix this

    I upgraded to firefox 4 and now whenever I open the browser or a new window in the browser I get an error message that reads "Components.classes[cid] is undefined. How do I fix this message. I have reinstalled firefox 4 three times and still get the message. I am running windows 7 pro

    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
    * [[Troubleshooting extensions and themes]]
    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")

  • When I launch Firefox 4.0 I get the following message "TypeError: Components.classes[cid]is undefined. How do I fix this?

    When I click "ok" the pop up window clears and FireFox opens. I believe this error is also preventing Privacy Protect from activating in FireFox.

    This is probably due to an add-on that is not compatible with Firefox 4. For details of how to troubleshoot that see https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes

  • I reinstalled hoping it would get rid of the error message that pops up each time i open it TypeError: Components.classes[cid] is undefined

    When I open up Mozilla i get this error message--TypeError: Components.classes[cid] is undefined
    also when i am working on my real estate web site and pull up a name i get the same messag. At the top it always says-- Java Script Application

    That error is caused by an incompatible/malfunctioning add-on. To identify the culprit follow the procedure in the [[troubleshooting extensions and themes]] article. One add-on that has caused this error for some is AVG safe search.

  • Everytime I open a window in Firefox 4 beta 2 I get a messeage that says TypeError: Components.classes(cid) is undefined, when I click OK it opens up the new window. How can I fix this?

    Everytime I open a window in Firefox 4 beta 2 I get a messeage that says TypeError: Components.classes(cid) is undefined, when I click OK it opens up the new window.

    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 />

  • Hi there I have updated to your lates version but every time I open up the browser and new windows I get this error message 'TypeError: Components.classes[cid] is undefined' although it does work but the message is very annoying

    Question
    Hi there I have updated to your lates version but every time I open up the browser and new windows I get this error message 'TypeError: Components.classes[cid] is undefined' although it does work but the message is very annoying

    This issue can be caused by an extension that isn't working properly.
    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
    * https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes

  • Since installing Firefox 4, I keep getting this message "TypeError: Components.classes[cid] is undefined" when a window should open. Also print and print preview don't work properly anymore.

    Since installing the newest version of Firefox, This message "TypeError: Components.classes[cid] is undefined" appears in a box when a new window should open. Also, what you see in print print preview is not what prints.

    This type of error is usually caused by an add-on you are using that is not compatible. It could be anything from an antivirus link scanner like AVG Safe Search add-on, or McAfee Site Advisor add-on, or something similar. To confirm what add-on is causing this use the procedure in this link:
    https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes
    Try Disabling the last add-on that was installed prior to upgrading to version 5.0
    Check and tell if its working.

  • When I open Firefox, the browser does not open. Instead I get a small window that says: TypeError: Components.classes[cid] is undefined. How do I fix this?

    I tried to uninstall AVG antiviral software, but it did not uninstall. Next, when I try to open Firefox I get a box popup that says:
    TypeError: Components.classes[cid] is undefined.
    If I click OK in that box, I can then open Firefox.
    Also I can no longer update Java.
    Help!

    Possibly you have "AVG Safe search" extension installed as part of "AVG Free", solution involves reinstalling :AVG Free" without the Link Scanner component see
    * http://kb.mozillazine.org/Problematic_extensions
    * symptom was noted in https://support.mozilla.com/questions/865877
    Other possibilities
    * "OneClick YouTube Downloader 1.07" as reported in
    *: https://support.mozilla.com/questions/864343
    * "Java console" needs to be updated as reported in
    *:https://support.mozilla.com/questions/863711]
    * "HP Smart Print 1.0" as reported in
    *: https://support.mozilla.com/questions/857283
    * "McAfee Site Advisor" as noted in (also see Problematic extensions above)
    *:https://support.mozilla.com/questions/802381
    *a theme After switching to the default theme the JavaScript error doesn't appear. (View > Page Style > No Style or if "Firefox" button use "Alt" first to get to the View menu)
    *:https://support.mozilla.com/questions/837840
    *various extensions/applications but is 1 year back and Firefox 3.6.6
    *:https://support.mozilla.com/questions/729606
    If none of the above solve you problem use diagnostic approach...
    *: https://support.mozilla.com/questions/837840

  • I am getting this error message when i try to open FF "ug-in object: TypeError: Components.classes[cid] is undefined"

    This is the error message I get when i click to open FF after i downloaded the newest version: "ug-in object: TypeError: Components.classes[cid] is undefined" . The message is in the top left corner and not fully visible. i sent a message a few min ago so i am sending this b/c i copied the error message to help diagnose the problem.

    This issue can be caused by an extension that isn't working properly.
    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 > Appearance/Themes).
    * Don't make any changes on the Safe mode start window.
    See:
    * [[Troubleshooting extensions and themes]]

  • Upgraded to FF4, Have windows 7, everytime I click on FF4 to go online, I get pop-up box with error message [Javascript: application] Typeerror: Components.classes[cid] is undefined...when I click OK it lets me online but this is a pain

    I get an error message... [Javascript: application] upper left corner in the pop-up box, then in the body of the pop-up box it says, Typeerror: Components.classes[cid] is undefined...when I click OK it lets me online but this is a pain, also, I get the same message when I try to open another window while using FF4...Thanks and hope you can help...

    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]]

  • The following error message came when I tried to open Firefox and install Firefox Home. "can't create mcafee plug-in object: TypeError: Components.classes[cid] is undefined"

    The following error message came when I tried to open Firefox and install Firefox Home.
    "can't create mcafee plug-in object: TypeError: Components.classes[cid] is undefined"

    This issue can be caused by an extension or plugin that isn't working properly.
    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 4.0 displays an error code when launching: "TypeError: Components.classes[cid] is undefined", add-ons doesn't work and I can't open any web pages

    Hello
    I've been running Firefox 3.6.16 with no problems at all, and this morning decided to upgrade to Firefox 4.0, as the developer of the them I use, Foxscape, has upgraded it to work with 4.0. The installation appeared to be as normal, but when I launched 4.0, the following error message appeared: error "when launching firefox 4.0 TypeError: Components.classes[cid] is undefined". The browser launched, but while I could go to webpages if they were in my bookmarks, so no problems with my internet connection, but when I typed in a URL (for example google.co.uk) and pressed "go", nothing happened. Similarly, when I tried to go to add-ons, it was as if I hadn't clicked anything. I wondered whether it was an issue with Foxscape (although I've never had any problems before when upgrading, as the standard theme just appears) so I reverted to 3.6.16, switched the theme to standard, then tried upgrading to 4.0 again. The same thing happened, so I'm positive it's got nothing to do with Foxscape.
    I run Windows Vista Home Edition on a Dell Inspiron. I also have IE 9 installed (I installed it a few weeks ago, and it's been running fine with 3.6.16). I've never had any problems with Firefox before; I'm very keen to upgrade to 4.0, and would appreciate your help in fixing this.
    Thanks

    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 > Appearance/Themes).
    * Don't make any changes on the Safe mode start window.
    See:
    * [[Troubleshooting extensions and themes]]

  • Getting error message when starting Firefox. Msg as follows: TypeError: Components.classes[cid] is undefined (using on Windows 7) Help?

    Getting the following error message when I start Firefox. ''TypeError: Components.classes[cid] is undefined''
    Do not know where to go to fix this. Running my laptop on Windows 7.

    This issue can be caused by an extension that isn't working properly.
    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
    *https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes

  • Everytime I open Firefox 5, a window pops up that says,"TypeError: Components.classes[cid_siterank] is undefined,"with an ok button on it. I want this box to disappear.

    Everytime I open Mozilla Firefox 5 Beta, a window pops up that says, "TypeError: Components.classes[cid_siterank] is undefined," with an "ok" button, after I click ok, it opens firefox, how do I stop this window from appearing everytime I open firefox? It never did this with previous versions of firefox.

    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
    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")
    In Firefox 4+ you can use one of these to start in <u>[[Safe mode]]</u>:
    * Help > Restart with Add-ons Disabled
    * Hold down the Shift key while double clicking the Firefox desktop shortcut (Windows)
    * https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes

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