AirPrint not working

I'm having similar issues with my Cannon MG3620.  It was working fine until I swapped out my router last week.

I'm trying to reinstall the printer, but during the set up, it's not showing up and I can't complete the install.

Try disabling the Xfi Advanced Security feature as a work-around for now and see. It's buggy ! And there is currently no way for an end-user to be able to whitelist anything;

To disable the Advanced Security feature in xFi, select the Account icon from the top-left corner of the Overview tab on the xFi app and then select xFi Advanced Security. From here, select Disable under xFi Advanced Security and follow the on-screen prompts.

https://www.xfinity.com/support/articles/xfinity-xfi-faqs

EG, 

Thanks for the response. 

I disabled xFi Advanced Security, but still am unable to get this printer installed. 

In the app, I can see the printer is connected to the network, I can see the IP and MAC for the printer.  So, I know it's at least partially connected.  

Any other ideas?

Here is a link to my other thread on the canon support page.  You can see screenshots there.

https://community.usa.canon.com/t5/Wireless-Networking/MG3620-Wireless-Set-up/m-p/326170/highlight/false#M8666

Have you tried setting it up using the user-interface on the printer itself ?

Not sure what you mean by on the interface on the printer. 

I tried installing the printer using the software from the Canon website/Canon utility.

Does it have a touch screen on the front. Manual settings / selections should be able to be configured there.

Try lowering the security level on the firewall, or temporarily disable it completely for a test;

https://www.xfinity.com/support/articles/advanced-xfinity-wireless-gateway-features

The printer does not have a touch screen.

I ended up setting my iphone up as a hot spot and connected my Macbook to the hotspot (taking my Xfinity router out of the equation).

I was then able to install the printer and print.  This would indicate the router is blocking the install.

When I switch from the hot spot back to the router, I cannot use the printer or install it.  Is there anyway to further reduce the security on the router to allow the install to go through?

I have this problem too (HP Photosmart D110). Printer cannot connect ever since I upgraded to Xfi and stopped using my own modem and router.  I tried separating the networks (2.4 and 5 GHz) based upon another thread recommendation.  No dice.  My printer is quite old but was working perfectly up until the upgrade.  When I manually enter information on the touch panel to connect to the network it says its successful.  When I look at my devices and their connectivity via the comcast website it also says it is connected.  But I cannot get the printer to do anything from my laptop and the wireless connectivity indicator light on the front of my printer won't stop flashing (as if it as trying to connect but is unsuccessful).

I have a Brother HL-L3290CDW Multifunction laser printer, with WiFi and AirPrint functionality, that would go offline at random times, often after a reboot of my Xfinity gateway. Most recently, it would print after the printer was restarted, then after a minute or so lose the connection.

There were TWO critical issues I had to resolve to get my Apple (Macs and iOS) devices to print:

1. Many printers cannot use the 5GHz WiFi band - I had to create a separate 2.4 GHz network with a different SSID, then connect my printer to that network (I had same issue with a smart thermostat):
   https://help.brother-usa.com/app/answers/detail/a_id/73618/~/compatibility-with-5-ghz%2C-dual-band-wireless-router%2C-or-mesh-networks
   You will need to have a different name (SSID) for each band, 2.4 GHz and 5GHz, then connect your printer using the 2.4 GHz SSID:
   https://www.xfinity.com/support/articles/change-wifi-mode-admin-tool-xfinity-xfi
   
   
2. You will need to configure your xFinity Gateway to enable "zero config" before your AirPrint printer will appear in iOS devices, and also to stay alive as a Mac CUPS printer:
   https://www.xfinity.com/support/articles/configure-device-discovery-for-wifi
   Zero config is apparently required to let Bonjour communications through.

Thanks so much for posting the recommendation about "Zero Configuration".  I have been running Big Sur Public Beta and was just assuming it was an Mac OS issue.  But after doing some more research, I began to wonder about my newly aquired XFi Gateway.  Sure enough, the "zero config" was defaulted to "disabled" and when I changed it to "enabled", my HP OfficeJet 6958 was recognized again and has stayed connected (I did restart the XFi Gateway and my iMac just to make sure as well).  I've seen this problem listed on various other forums, but this is one of the few I have seen that mention the solution below.  Again, it worked for me and thank you again for posting it.

1. You will need to configure your xFinity Gateway to enable "zero config" before your AirPrint printer will appear in iOS devices, and also to stay alive as a Mac CUPS printer:
   https://www.xfinity.com/support/articles/configure-device-discovery-for-wifi
   Zero config is apparently required to let Bonjour communications through.

I tried all the above with my HP 6200 and nothing. This also happened when I “upgraded” my router to the newer white model. 

@user_53f232 

Please create a new topic of your own here on this board detailing your issue. Thanks. Dead thread from last year now being closed.