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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.
If a website requires a secure connection that cannot be established, Firefox will not connect and will show you an error page. Learn more.
Learn how to access and adjust Firefox settings, including privacy, startup behavior, downloads and more.
Firefox will show you a "connection is not secure" warning message when a website login page is insecure and information could be stolen.
