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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.
Firefox automatically updates itself by default, but you can always do a manual update. Learn how to update Firefox on Windows, Mac, or Linux.
If you can't connect to a website, you may see the Server Not Found error message. Learn how to troubleshoot and fix this error.
If a website requires a secure connection that cannot be established, Firefox will not connect and will show you an error page. Learn more.
