Can't connect TV or Printer to Wi-Fi even though they were connected before

[Jdroeger]

Both our wi-fi enabled TV and our printer stopped connecting to the wi-fi last month. When I search for a network on both devices, nothing shows up even though our computers and phones are connected and the wi-fi is working. I have tried restarting the gateway several times and it still doesn't work. I can't seem to find a phone number for support and the Xfinity Assistant is no help. I'm beyond frustrated right now ...

[EG]

The two WiFi bands have recently been combined into one with the Comcast gateway devices. Some devices get confused and don't know how to see / talk to combined bands.

If you are not using any Xfi Pods, you can try separating the 2.4 and the 5.0 bands and give them two different broadcast names / SSID's;

https://www.xfinity.com/support/articles/change-wifi-mode-admin-tool-xfinity-xfi

Associate the devices with the 2.4 or the 5.0 (whichever one  works) band's SSID (broadcast name) and password.