Help & troubleshooting for channels on your Roku device, including adding/removing channels, logging in to, authenticating, or activating a channel, channel-specific playback issues, assistance contacting channel publishers to report issues, and adjusting channel-specific settings.
How are you trying to watch Fox News? Are you trying to watch it through the channel provider directly or through the Xfinity channel? For more information about that channel's features and functionality, you'll want to contact the channel provider support directly to inquire further, or possibly in this instance your cable provider. Many channels on Roku are developed and maintained by the channel provider themselves.