Hello, I saw that you have some addons to block some pages and saw some are inactive, but try click on the link in Safe Mode: *[https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode Firefox in safe mode] Also try verify if your antivirus or Firewall are blocking the access. *[https://support.mozilla.org/en-US/kb/configure-windows-firewall-allow-firefox-access Configure Windows Firewall to allow Firefox access to the Internet] Also: *[http://www.mozilla.org/en-US/plugincheck/ Plugin check] *[https://support.mozilla.org/en-US/kb/remove-recent-browsing-search-and-download-history Clear recent history]