Comcast and Microsoft are aware of a bug preventing some Xbox One owners from playing games online via Wi-Fi on Comcast’s broadband Internet and are working together to rectify the situation.
The bug is a software issue and occurs when players try to play games via Wi-Fi from an IPv6 address. This leads to some games’ online features potentially not working whatsoever.
Comcast, the largest home Internet service provider in the United States, has released a statement on the matter saying, “We anticipate that Microsoft will release a software update after the holidays that will resolve this issue.”
Currently, the only guaranteed workaround is to connect directly to the Internet with an ethernet cable. Should you be using the Arris TG862G wireless gateway modem, though, you might need a firmware update. The latest, version 7.6.59c, could fix the problem.