This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Buscar en Ayuda

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Este tema ha sido archivado. Haz una nueva pregunta si necesitas ayuda.

Couldn’t load XPCOM

  • 1 respuesta
  • 1 tiene este problema
  • 1 visita
  • Última respuesta de FredMcD

miguelirigoras
miguelirigoras
more options

Hola, tengo un problema, Firefox ha dejado de cargar, da este mensaje "Couldn’t load XPCOM" he intentado hacer otro perfil, he borrado las carpetas he reinstalado... pero sigue dando el error. gracias.

Solucionado viendo un video en Youtube:, por alguna extraña razón, simplemente cambiando el nombre de Firefox.exe por firefox1.exe, carga y funciona a la perfección

Hello, I have a problem, Firefox has stopped loading, it gives this message "Couldn't load XPCOM" I have tried to make another profile, I have deleted the folders I have reinstalled... but it continues to give the error. Thank you.

Hola, tengo un problema, Firefox ha dejado de cargar, da este mensaje "Couldn’t load XPCOM" he intentado hacer otro perfil, he borrado las carpetas he reinstalado... pero sigue dando el error. gracias. Solucionado viendo un video en Youtube:, por alguna extraña razón, simplemente cambiando el nombre de Firefox.exe por firefox1.exe, carga y funciona a la perfección Hello, I have a problem, Firefox has stopped loading, it gives this message "Couldn't load XPCOM" I have tried to make another profile, I have deleted the folders I have reinstalled... but it continues to give the error. Thank you.

Modificadas por miguelirigoras el

Todas las respuestas (1)

FredMcD
FredMcD
more options

Let’s do a full clean re-install;

Note: Firefox comes in three or more folders on all computers. They are;

Maintenance: (Programs Folder) <Windows Only> Firefox itself: (Programs Folder) And two folders in the profile of each user on the computer for each Firefox profile for that user.

If you remove the Firefox program folder, the user profiles would not be affected.

Download Firefox For All languages And Systems {web link}

Firefox ESR; Extended Support Release {web link}

Beta, Developer, Nightly versions https://www.mozilla.org/en-US/firefox/channel/desktop/

Install Older Version Of Firefox {web link} Be sure to read everything here.


Download and save the program you want. Then Close Firefox.

Using your file browser, open the Programs Folder on your computer.

Windows: C:\Program Files C:\Program Files (x86) Note: Check Both Folders

Mac: Open the "Applications" folder. https://support.mozilla.org/en-US/kb/how-download-and-install-firefox-mac

Linux: Check your user manual. If you installed Firefox with the distro-based package manager, you should use the same way to uninstall it. See Install Firefox on Linux; https://support.mozilla.org/en-US/kb/install-firefox-linux

If you downloaded and installed the binary package from the Firefox download page, simply remove the folder Firefox in your home directory. http://www.mozilla.org/firefox#desktop ++++++++++++++++++++++++++++ Look for, and remove any Mozilla or Firefox program folders. Do not remove the Mozilla Thunderbird folder if there is one.

Do Not remove any profile folders.

After rebooting the computer, run a registry scanner if you have one. Then run the installer. +++++++++++++++++++++++++++ If there is a problem, start your Computer in safe mode and try again.

How to Start all Computers in Safe Mode; {web link} Free Online Encyclopedia