We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

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.

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

  • 1 respuesta
  • 2 tienen este problema
  • 13 visitas
  • Última respuesta de TonyE

Luche
Luche
more options

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

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

Todas las respuestas (1)

TonyE
TonyE
  • Moderator
more options

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.