Windows 10 reached EOS (end of support) on October 14, 2025. For more information, see this article.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Featured Articles

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 updates end and what steps Mozilla recommends to keep your browsing secure.

Secure connection and security warning error pages in Firefox

Secure connection and security warning error pages in Firefox

If a website requires a secure connection that cannot be established, Firefox will not connect and will show you an error page. Learn more.

Make Firefox your default browser on Windows

Make Firefox your default browser on Windows

Learn how to make Firefox your default Web browser on Windows 10 and Windows 11.

Captive portal detection

Captive portal detection

Description of how Firefox detects captive portal networks.