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Secure connection failed and Firefox did not connect

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.

Insecure connection password warning in Firefox

Insecure connection password warning in Firefox

Firefox will show you a "connection is not secure" warning message when a website login page is insecure and information could be stolen.

Make Firefox your default browser on Windows

Make Firefox your default browser on Windows

Learn how to make Firefox your default Web browser on Windows 10 and Windows 11.

Install Firefox on Linux

Install Firefox on Linux

This article describes how to download and install Firefox on Linux.

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