There are times when users complaint of their Comcast Xfinity Internet Not Working all of a sudden. But they often ignore the fact that before complaining, basic troubleshooting can always be performed. You can also try the mentioned options to rectify the trouble at your own part –

• Check for reported outages
• Look for the power and connections for your devices
• Restart all the devices
• Change the position of the router
• Minimize the number of allowed connections
• Stop any downloading process