Featured Articles
Secure connection failed and Firefox did not connect
If a website requires a secure connection that cannot be established, Firefox will not connect and will show you an error page. Learn more.
Firefox options, preferences and settings
The Options/Preferences panels give you access to Firefox settings. This article describes what types of settings are available in each panel.
How to change your default browser in Windows 10
Learn how to make Firefox your default browser in Windows 10.
Insecure password warning in Firefox
Firefox warns you when a login form is not secure and your information could be stolen.
