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Couldn't load XPCOM what do Ido now?

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  • 1 ha questo problema
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  • Ultima risposta di ddwlock

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using windows 7, Get this message when I try to start Firefox browser!

using windows 7, Get this message when I try to start Firefox browser!

Soluzione scelta

Try to repeat the delete and install steps in Windows Safe Mode.

Boot the computer in Windows Safe Mode with network support (press F8 on the boot screen) to see if that works.

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Hello,

Certain Firefox problems can be solved by performing a Clean reinstall. This means you remove your Firefox program files and then reinstall Firefox. This process does not remove your Firefox profile data (such as bookmarks and passwords), since that information is stored in a different location.

To do a clean reinstall of Firefox, please follow these steps: Note: You might want to print these steps or view them in another browser.

  1. Download the latest Desktop version of Firefox from mozilla.org (or choose the download for your operating system and language from this page) and save the setup file to your computer.
  2. After the download finishes, close all Firefox windows (or open the Firefox menu New Fx Menu and click the close button Close 29).
  3. Delete the Firefox installation folder, which is located in one of these locations, by default:
    • Windows:
      • C:\Program Files\Mozilla Firefox
      • C:\Program Files (x86)\Mozilla Firefox
    • Mac: Delete Firefox from the Applications folder.
    • Linux: If you installed Firefox with the distro-based package manager, you should use the same way to uninstall it - see Install Firefox on Linux. If you 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 the downloaded installation file and go through the steps of the installation wizard.
    2. Once the wizard is finished, choose to directly open Firefox after clicking the Finish button.

More information about reinstalling Firefox can be found here.

WARNING: Do not use a third party uninstaller as part of this process. Doing so could permanently delete your Firefox profile data, including but not limited to, extensions, cache, cookies, bookmarks, personal settings and saved passwords. These cannot be easily recovered unless they have been backed up to an external device! See Back up and restore information in Firefox profiles.

Please report back to say if this helped you!

Thank you.

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EDIT: answer posted while I was writing the answer up.

Modificato da Kyle K. il

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Note that this can happen because of a failed Firefox update that left you with a mixture of old and updated files in the Firefox program folder. This can happen in case security software was keeping a handle of some of the files in the Firefox program folder preventing Firefox from replacing all the files.

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I still get this message "couldn't load XPCOM

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What did you do?

Did you delete the Firefox program folder?

  • (32 bit Windows) "C:\Program Files\Mozilla Firefox\"
  • (64 bit Windows) "C:\Program Files (x86)\Mozilla Firefox\"

You can find the full version of the current Firefox release (42.0) in all languages and all operating systems here:

It is possible that security (Anti-Virus, firewall) is causing problems. Try to disable security software temporarily to see if that makes a difference.

Modificato da cor-el il

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Yes I deleted both folders. Then went through the download process. At the end of that process the same message appeared (Couldn't load XPCOM"

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Soluzione scelta

Try to repeat the delete and install steps in Windows Safe Mode.

Boot the computer in Windows Safe Mode with network support (press F8 on the boot screen) to see if that works.

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Thx very much.....

I first rebooted the computer in safe mode w/network and tried Firefox.
It worked just fine. 

Then I rebooted my computer as normal and all worked fine .......