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

Performance and connectivity

Site breakages

Resolve problems when websites don’t load or function correctly.

Na Bekee

Fix error “Website will not allow Firefox to display the page.”

Troubleshoot time-related errors on secure websites

Troubleshoot security error codes on secure websites

How do I report a broken site in Firefox desktop?

Fix problems connecting to websites after updating Firefox

Websites don't load - troubleshoot and fix error messages

Firefox can't load websites but other browsers can

Websites look wrong or appear differently than they should

Resist Fingerprinting

Fix problems with Facebook games, chat and more

Firefox and other browsers can't load websites

Fix login issues on websites that require a username and password

Configure firewalls so that Firefox can access the Internet

Troubleshoot issues related to add-ons

Websites show a spinning wheel and never finish loading

Websites say that Firefox is outdated or incompatible even though it's the latest version

TLS Error Reports

Difficulties opening or using a website in Firefox 100

Problems with email and how to find help

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Volunteer

Grow and share your expertise with others. Answer questions and improve our knowledge base.