Receiving this error "TypeError: Components.classes[cid] is undefined" when opening Firefox 4. Never received this prior to upgrading to version 4.

Also receiving this error when logging on to some websites. Able to close the error screen and continue but it is aggravating.

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

  • 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.

  • Since upgrading to 6 I get "TypeError: Components.classes[cid] is undefined" when loading Firefox - why?

    When loading Firefox or certain pages I get a message box appear with "TypeError: Components.classes[cid] is undefined" if I hit "OK" the system continues. This has only happened since the recent security upgrade to Firefox. I have downloaded Firefox and reinstalled but the message persists.

    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

  • I get message "TypeError: Components.classes[cid] is undefined" when opening and some web sites andd I have to cancel or close to continue.

    Top of error box JAVAScript application
    i have downloaded most recent Java but it problem continues.

    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 or if hardware acceleration 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

  • Get error "TypeError: Components.classes[cid] is undefined" and can't load web pages. Problem with Firefox 5?

    I tried repeatedly to load Firefox 5. The Error "TypeError: Components.classes[cid] is undefined" keeps coming up. The browser loads but any URL I enter doesn't load. Sites activated by buttons do load. Internet Explorer works.

    07-05-11 When I turned on my laptop (Vista) this morning, I got a Start in Safe Mode and Repair message so I did. It suggested a System Restore, I hit OK. When it started like normal, I waited a few minutes then TRIED to launch Firefox 5.0 but kept getting a Mozilla Crash Report dialogue. So I instead opened Firefox 4.0b12 --error free-- so I could get here to get help. When I tried the Run... firefox.exe -profilemanager step, I get the subject error. When I try to open FF 5.0 in Safe Mode by holding down the shift key simultaneously, I get the subject error and no launch (though no Crash box either). I will try to let the FF 5.0 Updater run when it appears again but it never lets me choose when to Ask Again so I don't think it'll show again until tomorrow. Sigh. Oh, and like someone at a different version of this error blog re WinVista 32bit, now I'm getting the issue of Enter not executing the URL typed in the address bar; I had to click the arrow.
    I hope the Update is to fix this problem.

  • 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 />

  • Having this block coming up for java ,,TypeError: Components.classes[cid] is undefined what do i do to fix this issue

    while downloading fire fox
    it requested i update java,, which i did and upon doing so and restarting computer to have commponates installed ,,this error comes up and will not stop.. box heading JAVA SCRIPT APPLICATION WITH THIS MESSAGE....TypeError: Components.classes[cid] is undefined HOW MIGHT I FIX THIS ISSUE

    This type of error is typically caused by an incompatible/malfunctioning extension. Try the procedure in the [[troubleshooting extensions and themes]] article.
    The AVG safe search add-on is one that has caused this error.

  • Suddenly every time I try to open firefox, I get this error: TypeError: Components.classes[cid_siterank] is undefined

    it will load after I x it out, but when I open hotmail, it loads, and reloads, and acts as though it has a virus. in the address bar a message keeps flashing saying something about javascript. I've tried everything.

    cor-el is correct. I confirmed this myself. Has nothing to do with Add-ons. It happened on a brand new laptop with no add-ons installed.
    It is a bug that needs to be squashed ASAP.

  • 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]]

  • After I downloaded Firefox 4 and I try to open Firefox, I get this error message, "plug-in object: TypeError: Components.classes[cid] is undefined". I click "OK"; Firefox opens and works just fine. Any suggestions??

    Not much to add. Before Firefox will open, I get this error message, "plug-in object: TypeError: Components.classes[cid] is undefined". I click the "OK" button; Firefox opens and I have no further problems.
    I use an Apple with OS v. 10.6.7 and had no problems until I downloaded Firefox 4.0

    That indicates you have 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

  • What can I do about this: After upgrading to firefox 6, I get this error. TypeError: Components.classes[cid] is undefined???

    What can I do about this:
    After upgrading to firefox 6, I get this error.
    When I click to open Firefox, A box open with the following error:
    JAVASCRIPT Application
    TypeError: Components.classes[cid] is undefined?
    After I click close on the box, then Firefox will start. I really just want to get the error fixed so that when I want firefox open, I don't have to see this box anymore.

    You need to figure out which add-on is causing that error and disable it until the developer of that add-on fixes it. There may be an error message about that in the Error Console, accessed through the Web Developer menu item or through {Ctrl + Shft + J}.
    Also see this: <br />
    http://support.mozilla.com/en-US/kb/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]]

  • 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

  • I am getting an error message when I open Firefox 5 (Win.Vista) "TypeError:Components.classes[cid] is undefined." How can I get rid of this? Thank you.

    Only started since the upgrade. Windows Vista Home 32 bit.
    The error message reads:
    "TypeError:Components.classes[cid] is undefined."

    Try the suggested idea above. I just disabled all the add-ons which were not compatible with FF 5 and did a FF restart. That fixed the problem. I then enabled each one, one at a time, with a FF restart until the problem came back. I then disabled that add-on.

  • 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.

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