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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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Security

Keep yourself secure online.

Katika Kiingereza

Use built-in VPN in Firefox

Firefox Password Manager - Alerts for breached websites

Firefox security features warning on Linux

Control personal device and local network permissions in Firefox

Unable to find the built-in VPN in Firefox

Sign in to a Mozilla account using 3rd-party authentication

Recommended Firefox privacy and security settings for families

Certificate contains the same serial number as another certificate

Block and unblock websites with parental controls on Firefox

Suspicious activity on my Mozilla account

Use breach alerts in Firefox

Compatibility with Exploit protection on Windows

Data Loss Prevention

Understand unexpected script warnings in Firefox

Harmful add-on protection

Troubleshoot network errors when TLS key logging is enabled

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