Failed to load xpcom

Do you have a system restore, but found ehn I can't open Firefox or Thunderbird. Both get this same error message

Hi, please reinstall firefox and thunderbird. It is a common error after you perform a windows system restore because it restores some mozilla files necessary for the proper functioning of an earlier version, but not all of them!

Tags: Firefox

Similar Questions

  • Firefox to start says failed to load XPCOM

    I use the latest version of Firefox on my Windows XP SP2 and when I try to run Firefox, it says that was not able to load XPCOM and also no other browsers (I tried IE, Chrome) just doesn't work, they do anything - Please HELP.

    Seems a bit default solution for "could not load XPCOM" - uninstall FF.

  • Failed to load XPCOM Ido now?

    Using windows 7, you get this message when I try to start the Firefox browser!

    Try to repeat delete it and Windows safe mode installation steps.

    Start the computer in Mode safe mode with network support Windows (on the startup screen, press F8) to see if it works.

  • All of a sudden I can't launch firefox, message says: unable to load XPCOM, what should I do?

    Can't get on the line, the browser says "failed to load XPCOM" icon, what can I do? Help, please. I'm not very savvy computer. Please keep it very simple.

    This may be caused by an update of Firefox failure that left you with a mixture of old and update files in the Firefox program folder.

    Do a clean reinstall and delete the program folder before Firefox to (re) install a new copy of the current version of Firefox.

    If possible to uninstall your current version of Firefox to clean the Windows registry and settings in the security software.

    • Do NOT remove the "personal data" when you uninstall your current version of Firefox, because this will remove all profile folders and you lose personal data such as bookmarks and passwords including data profiles created by other versions of Firefox.

    Delete the program folder Firefox before installing newly downloaded copy of the Firefox installer.

    • (32-bit Windows) "C:\Program Files\Mozilla Firefox\"
    • (Windows 64 bit) "C:\Program Files (x 86) \Mozilla.

    Your bookmarks and other personal data are stored in the Firefox profile folder and will not be affected by a uninstall and (re) install, but do NOT delete personal data when you uninstall Firefox which removes all Firefox profile folders and you lose your data.

  • When I click on foxfire, I get "unable to load XPCOM" any difficulty?

    I reset my computer to an earlier date. When I tried to connect to Foxfire after all I had was a box with the message "Failed to load XPCOM."

    Hello RBCyr, because you have indicated that the problem began to occur after a windows system restore please first try a clean reinstall of firefox:

    • Download the Setup file of firefox full of https://www.mozilla.org/firefox/all/
    • Uninstall from firefox on the machine
    • Manually remove any other files in the folder of the firefox program, which is usually in C:\Program Files (x 86) \Mozilla Firefox\
    • reinstall firefox

    in case this has not helped, the error message at startup xpcom can also be caused by thrid-party security tools: http://kb.mozillazine.org/Browser_will_not_start_up#.22Couldn.27t_load_XPCOM.22_error

  • Error: Cam not load XPCOM

    I use Windows 7.

    When I click on a link in my browser: FireFox or IE9, I get the message: cannot load XPCOM and the process fails.  Is XPCom module in W7 I can download from Microsoft:

    Hello!

    Please read this thread in the Firefox Support Forum: https://support.mozilla.org/en-US/questions/969703

    I hope this helps.

    And: your IE is exceeded, please be sure to upgrade to Version 10: http://windows.microsoft.com/en-us/internet-explorer/download-ie
    Note: Uncheck default Bing and MSN, if you do not want that

    See you soon
    Julia

  • When I click on the Firefox icon, it says: "cannot load XPCOM. What can I do?

    When I started this morning at the computer and clicked on the icon of Firefox, I received the message "unable to load XPCOM. What can I do to fix this?

    Hi, this problem can often be solved by performing a clean reinstall. This means that you delete your Firefox program files, and then reinstall Firefox. This process does not delete your Firefox profile (such as bookmarks and passwords) data, since this information is stored in a different location.

    To do a clean reinstall of Firefox, follow these steps: Note: you can print these steps or consult them in another browser.

    1. Download the latest version of Firefox from mozilla.org office (or choose the download for your operating system and language on this page) and save the file to install it on your computer.
    2. Once the download is complete, close all Firefox Windows (or open the Firefox menu

      Click the close button

      ).

    3. Remove the Firefox installation folder, which is located in one of these locations, by default:
      • Windows:

        • C:\Program Files\Mozilla Firefox
        • C:\Program Files (x 86) \Mozilla Firefox
      • Mac: Delete Firefox in the Applications folder.
      • Linux: If you have installed Firefox with the distribution-based package manager, you must use the same way to uninstall: see Install Firefox on Linux. If you have downloaded and installed the binary package from the Firefox download page, simply remove the folder firefox in your home directory.
    4. Now, go ahead and reinstall Firefox:
      1. Double-click on the downloaded Setup file and go through the steps in the installation wizard.
      2. Once the wizard is completed, click to open Firefox directly after clicking the Finish button.

    More information on the resettlement of Firefox can be found here.

    WARNING: Do not use an uninstaller to third parties as part of this process. This could permanently delete your Firefox profile data, including but not limited to, extensions, cache, cookies, bookmarks, personal settings and passwords saved. They can be retrieved easily unless they have been backed up on an external device! See back up and restore the information contained in the profiles of Firefox.

    Please report to say if this helped you!

    Thank you.

  • Thunderbird was not able to load XPCOM? Why? What to do next?

    Hi all
    able to ope thunderbird. Thunderbird 'could not load XPCOM. has been posted.
    Why?
    and what do I do next to fix it?
    Thank you.

    Have you tried to reinstall getthunderbird.com

  • I get an error "unable to load XPCOM. I know that I can reinstall Firefox but how to save my favorites?

    I get an error "unable to load XPCOM. I know that I can reinstall Firefox, but when I went to do that he erased all my favorites that I did a system restore. How to backup my bookmarks?

    Do a clean reinstall and delete the program folder before Firefox to (re) install a new copy of the current version of Firefox.

    If possible to uninstall your current version of Firefox to clean the Windows registry and settings in the security software.

    • Do NOT remove the "personal data" when you uninstall your current version of Firefox, because this will remove all profile folders and you lose personal data such as bookmarks and passwords including data profiles created by other versions of Firefox.

    Delete the program folder Firefox before installing newly downloaded copy of the Firefox installer.

    • (32-bit Windows) "C:\Program Files\Mozilla Firefox\"
    • (Windows 64 bit) "C:\Program Files (x 86) \Mozilla.

    Your bookmarks and other personal data are stored in the Firefox profile folder and will not be affected by a uninstall and (re) install, but do NOT delete personal data when you uninstall Firefox which removes all Firefox profile folders and you lose your data.

    If you keep problems also create a new profile.

  • During cleaning after reinstall the update Ver 33 and "Could not load XPCOM" when I run the installer for worm 33 he says "your download was interrupted. Now, what

    Running Windows 7. After Firefox updated to the Version 33 Firefox would not start. Received the message "unable to load XPCOM. Follow the instructions in the forum Firefox to do a clean reinstall. File downloaded from Mozilla.org , using Internet Explorer for Firefox does not work. Deleted the old program file. When I try to run the Firefox Setup Stub file 33.0 continues to stop. The message says "your download was interrupted. I tried to run several times all with the same result. I also made sure I deleted previous downloads before trying to re. Anyone know how to fix this? Thanks for your help.

    Do a clean reinstall and delete the program folder before Firefox to (re) install a new copy of the current version of Firefox.

    If possible to uninstall your current version of Firefox to clean the Windows registry and settings in the security software.

    • Do NOT remove the "personal data" when you uninstall your current version of Firefox, because this will remove all profile folders and you lose personal data such as bookmarks and passwords including data profiles created by other versions of Firefox.

    Delete the program folder Firefox before installing newly downloaded copy of the Firefox installer.

    • (32-bit Windows) "C:\Program Files\Mozilla Firefox\"
    • (Windows 64 bit) "C:\Program Files (x 86) \Mozilla.

    Your bookmarks and other personal data are stored in the Firefox profile folder and will not be affected by a uninstall and (re) install, but do NOT delete personal data when you uninstall Firefox which removes all Firefox profile folders and you lose your data.

  • message: could not LOAD XPCOM

    When I click on the Firefox icon, get the message "unable to load xpcom.

    I would appreciate your help. Thank you.

    Harvie N Green

    Do a clean reinstall and remove the Firefox program before (re) install a new copy of the current version of Firefox.

    If possible to uninstall your current version of Firefox to clean the Windows registry and settings in the security software.

    • Do NOT remove the "personal data" when you uninstall your current version of Firefox, because this will remove all profile folders and you lose personal data such as bookmarks and passwords including data profiles created by other versions of Firefox.

    Remove the Firefox program before installation newly downloaded copy of the Firefox installer.

    • (32-bit Windows) "C:\Program Files\Mozilla Firefox\"
    • (Windows 64 bit) "C:\Program Files (x 86) \Mozilla.

    Your bookmarks and other personal data are stored in the Firefox profile folder and will not be affected by a uninstall and (re) install, but make sure that 'delete personal data' is NOT selected when you uninstall Firefox.

  • I uninstalled Firefox on my computer, then I reinstalled and tried to run, but this message appeared, "failed to load your Firefox profile,"

    I uninstalled Firefox on my computer, then I reinstalled and tried to run, but this message appeared, "failed to load your Firefox profile. It may be missing or inaccessible"and Firefox does not open.

    I tried press windows key + R on my computer and open %appdata%\Mozilla\ - and rename the folder labeled "Firefox", but he said that "the action cannot be complete because the folder or the file that is open in another program" I didn't open it and try to restart the pc, but still no help

    A likely cause is a problem with the file profiles.ini and the profile marked as the default value = 1 in this file is no longer present on the hard drive.

    • Windows: %AppData%\Mozilla\Firefox\
      C:\Users\ < user > < profile > \AppData\Roaming\Mozilla\Firefox\Profiles\.
    • Linux: ~/.mozilla/firefox/
    • Mac: ~/Library/Application Support/Firefox /.

    You can use one of them to make the Creation/use of a new default profile for Firefox:

    • Remove the profiles.ini file to force Firefox to create a new default profile
    • Use the Profile Manager to create a new profile
    • Use "Choose a folder" when you create a new profile to select the location of a lost profile and recover this profile

  • I use Windows 7, I downloaded Firefox 17 it will not load I'll uninstall and it will not uninstall. When trying to go to a website I cant load xpcom gt

    I use Windows 7, I downloaded Firefox 17 it will not load I'll uninstall and it will not uninstall. When I use Thunderbird I try to go to a web site and get the error could not load xpcom.

    How can I uninstall this mess and start again?

    Go to www.getfirefox.com and download Firefox 24 (do not use Firefox 17 not supported) and install it.

  • JavaScript blocked or failed to load

    Hello
    Some time ago I suddenly realized that JavaScript was not working in my Firefox. I get a very explicit stack overflow error message:

    "Stack overflow requires external JavaScript from another domain, which is blocked or failed to load."

    Many other sites Web will not work.

    I am currently running Windows 7 and on typing 'java-version', I get the following result:

    Java version "1.7.0_40".
    Java (TM) SE Runtime Environment (build 1.7.0_40 - b43)
    Java for 64-bit Server VM (build 24, 0 - b56, mixed mode)

    I know that Java is installed and working as I can compile and run the NetBeans .java files.

    I'm in trouble I have spent hours to solve this problem, but he resolved No. I am very hopeful of a solution here.

    Thank you

    COR - el I experimented and installed Firefox 25 Beta 3 and JavaScript all work correctly.

  • Error. Could ' t Load XPCOM. Can't Uninstal from Windows C/P

    (a) running Mozilla Fireforx 23.0.1.4974 on a Dell laptop Studio XPS 1640 with the 64-bit of Windows Vista. I had to do a restore of the system back and since then my Mozilla Firefox is not running. I get the following:
    Part 1. "Error. Could not load XPCOM. Tried the solutions of this forum to UNINSTALL before you perform a new installation of the latest version.
    Part 2. In the Windows Vista Control Panel, Uninstal does not at all. Just a blank nothing.
    Before deleting the content & directory: C:\Program Files (x 86) \Mozilla Firefox, I noticed another directory C:\Program Files (x 86) \Firefox (99) that was created when I did a reset a few weeks ago. There is a folder on my desktop called 'Old data Firefox' which I assume icon contains my favorites, add-ins etc reset, I did it on August 18, 2013.
    Part 3. I tried the suggested search for %APPDATA%\Mozilla\Firefox\Profiles\ so that I could find, backup on a USB and a restoration after a new installation, but it returns no results. Is there an actual path I can use to locate these data? I want to retain my lastest bookmarks, modules etc. for installation of the latest charges.
    This web site is automated responses that are useless if Firefox will not open and run. I need of human intervention and human know-how. I am writing this issue with this terrible Internet Explorer.

    Main profile folder:

    • C:\Users\ < user > < profile > \AppData\Roaming\Mozilla\Firefox\Profiles\.

    Location of the cache folder (topic: cache):

    • C:\Users\ < user > < profile > \AppData\LocalMozilla\Firefox\Profiles\.

    The "Application Data" in XP/Win2K folder and the folder "AppData" in Windows Vista, Windows 7 and later versions are hidden folders.

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