Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

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What Windows 10 end of support means for Firefox users

What Windows 10 end of support means for Firefox users

Learn how Firefox will continue supporting Windows 10 after Microsoft ends its updates, and discover the steps Mozilla recommends to keep your browsing experience secure.

Firefox settings, preferences and other options

Firefox settings, preferences and other options

How to view or adjust Firefox settings (such as privacy, startup, session restore, tabs and download preferences) access other options and perform common tasks.

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.

Update Firefox to the latest release

Update Firefox to the latest release

Firefox automatically updates itself by default, but you can always do a manual update. Learn how to update Firefox on Windows, Mac or Linux.