Firefox Blocked Sites Jun 2026

If you believe a site has been incorrectly blocked, you can try the following:

For general content safety, you can use Google SafeSearch or Bing SafeSearch settings within Firefox to filter out explicit results from search engines. Why Firefox Blocks Certain Sites (Security) firefox blocked sites

| Error Message | Meaning | |---------------|---------| | | SSL/TLS certificate problem | | Secure Connection Failed | Connection interrupted or mismatched security settings | | This site may be hacked | Google Safe Browsing or Firefox blocklist | | Proxy Server Refusing Connections | Proxy misconfiguration | | The page isn’t redirecting properly | Cookie or cache loop | | Access Denied / 403 | Site or firewall blocking you | If you believe a site has been incorrectly