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

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Article Visits Status Needs Update Ready for L10N Stale Expiry Date
Server Not Found - Troubleshoot connection problems 312,806
Review Needed: Updated outdated troubleshooting steps, added modern guidance for Troubleshoot Mode, VPNs and DNS-over-HTTPS, improved proxy and site-data instructions, and removed obsolete about:config DNS and IPv6 advice. Yes Show translations
Secure connection and security warning error pages in Firefox 287,456
Live Yes Show translations
Captive portal detection 272,958
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Use built-in VPN in Firefox 245,361
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Thunderbird and Junk / Spam Messages 180,432
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Insecure connection password warning in Firefox 164,128
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About private browsing in Firefox for iOS 150,819
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Set Firefox as your default browser on Android 148,457
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Firefox settings, preferences and other options 141,255
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Update Firefox to the latest release 129,951
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