Search Support

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

every time I open firefox the following message appears: what happened:TypeError: Components.classes['@mozilla.org/extensions/manager;1'] is undefined" . After I press "OK" it continues, apparently normally.

  • 1 پاسخ
  • 1 has this problem
  • 1 view
  • آخرین پاسخ توسّط Hasan

more options

Everytime I open Firefox the following message appears:


what happened:TypeError: Components.classes['@mozilla.org/extensions/manager;1'] is undefine

Everytime I open Firefox the following message appears: what happened:TypeError: Components.classes['@mozilla.org/extensions/manager;1'] is undefine

All Replies (1)

more options

Troubleshooting extensions and themes

Check and tell if its working.