Teredo tunneling is a protocol that is part of the next generation TCP/IP protocol called “IPv6.” Teredo tunneling enables devices using the IPv6 protocol to communicate through an IPv4 (the current version of TCP/IP) networks by creating a virtual IPv6 tunnel through an IPv4 network. Uninstalling firewalls or other security software may disable or uninstall Teredo Tunneling, which can cause the Windows Homegroup network feature to fail. Reinstall Teredo Tunneling in order to resolve the issue. Writer Bio
