Check Windows Firewall isn't blocking it.
Do you have any other firewall software installed? Add Firefox as an exception..
@hippy started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
Check Windows Firewall isn't blocking it.
Do you have any other firewall software installed? Add Firefox as an exception..