For instructions on how to configure these programs, see the Configure firewalls so that Firefox can access the Internet article. Make sure your Internet security software (including firewalls, antivirus programs, anti-spyware programs, and more) is not blocking connections to the Internet.If you are using a wireless connection, make sure that you are connected to the right access point.Make sure your modem and/or router are both on and are not indicating errors.You should also check the following: You should begin by checking the following: (Windows XP): How to troubleshoot home networking in Windows XP.(Windows Vista): How to troubleshoot network connectivity problems in Internet Explorer.(Windows 7): Why can’t I get connected?.(Windows 8): Why can’t I get connected?.(Windows 10): Why can't I get online? and Fix network connection issues in Windows 10.
