Wireless printing issue

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

Will do once I get home and will update.

Thanks 

Thanks EG Expert.... but worked for a while then stopped.

Still searching though.

So I am having the same issue. I changed my printers to static IP from the web settings for the router/gateway. Go under the Connected Devices, find the printer(s) from the list, click Edit, change to a static IP. I wrote down the static IP addresses.

Next, in Windows, I launched a Command Prompt (type CMD in the "Type here to search" box next to the Windows icon usually in the bottom left of the screen). I ran the command tracert to the static IP address. The output gave me a long network name like this: "XSD12A86BAD6E3C8D.hsd1.mi.comcast.net". I used the copy command from the CMD icon in the top left of the screen under the Edit item on the menu.  I used that and manually setup each printer from Windows (e.g., Add printers & scanners, click to find (which it doesn't on my network now), click the printer I want wasn't listed, add printer using TCP/IP address or hostname, paste the long network name, manually configure the port, turn on SNMP, click OK, print your test page and cross your fingers).

I also turned-down the Firewall settings. I will add those back and hopefully it will keep working.

I developed the same problems over the last few days (e.g. sleep mode, not connecting, etc.).  However, I've had xFinity for over a  year and  had no prior problems printing, which leads me to agree that xFinity did a software upgrade.

My HP 8600 allowed me to print out the connection problem sheet that suggested I  needed to add my device (printer) using the Hardware Address (MAC) with a specifice port number in the xFinity modem software. Once that was completed, I deleted my printer on my pc and re-added it (displayed with the xFinitity name I gave it.).  After resetting up all the HP defaults, my printer now is connected, printing and not taking naps.

Very frustrating, especially when it used to work just fine.

Same issue. The problem ended  up being part of the new (white) gateway setup procedure that asked if I want to keep old setting. I chose yes. 

I tried setting a dedicated port, removing and reinstalling printers , no change.

Here is what worked. Login to your gateway through the website and check connected devices. Mine would show both of my printers even if they were unplugged. The fix for me was to remove the printers from my computer, unplug them, and then do a gateway reset with them unplugged. Once it comes back, check connected devices again. Your printer should not appear this time. Go ahead and reinstall the printer(s) and you should be fine. 

7 month old dead thread now being closed.