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Windows 10 will reach 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.

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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

Resist Fingerprinting

Firefox can't load websites but other browsers can

Websites look wrong or appear differently than they should

How do I report a broken site in Firefox desktop?

Fix problems with Facebook games, chat and more

Fix problems connecting to websites after updating Firefox

Configure firewalls so that Firefox can access the Internet

Firefox and other browsers can't load websites

Websites don't load - troubleshoot and fix error messages

Fix login issues on websites that require a username and password

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Websites say that Firefox is outdated or incompatible even though it's the latest version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

Troubleshoot issues related to add-ons

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.