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.

Every time I open Firefox I get the following msg "TypeError: Components.classes[cid] is undefined". How to correct this?

  • 1 respuesta
  • 1 tiene este problema
  • 1 visita
  • Última respuesta de cor-el

T11646
T11646
more options

Every time I click on the Firefox Icon to log in, I get the following message: "TypeError: Components.classes[cid] is undefined". I click on the "OK" button and I can enter. This occurs each time I follow any links on any web pages. How can this be corrected?

Every time I click on the Firefox Icon to log in, I get the following message: "TypeError: Components.classes[cid] is undefined". I click on the "OK" button and I can enter. This occurs each time I follow any links on any web pages. How can this be corrected?

Todas las respuestas (1)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

This issue can be caused by an extension that isn't working properly.

Start Firefox in Diagnose Firefox issues using Troubleshoot Mode 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).