MAC Filtering

@user_2e3502 

In case you can't get help here please check your printer manual. There are alternative methods found there.

Wi-Fi Direct would allow connections between computer (or other devices) and printer without the need for Internet.

I meant Wi-Fi Direct in first reply. Edit did not work.

https://support.hp.com/us-en/document/c04085902  WiFi specification says 802.11 b/g/n 2.4G ONLY.

If it's an Xfinity gateway, you'll have to downgrade the WiFi, and split out 2.4G and 5G radio signal.  I don't know how current this is, but use the phone app and change WiFi "modes" as Xfinity calls them:  https://www.xfinity.com/support/articles/change-wifi-channel-xfinity-xfi .  If it's a different gateway/WiFi router, you'll have to get the manual and see what 802.11 radio standard it's capable of.

Or, use WiFi direct as @MNtundraRET says.  Range is kind of limited, but it works fine.  It's also got an Ethernet port, so you could just put it on your network.

I meant Wi-Fi Direct in first reply. Edit did not work.

It worked, but when posting an edited message in these bargain-basement Sprinklr forums, it often takes several seconds for the edit to show up. You might need to reload the page several times.

Please be aware that there are 2 kinds of responses in this Forum: Replies and Comments. When you Comment on a post by scrolling down to "Comment on this post here...", I am notified of your response. But if you select Reply, I am NOT notified and may not be aware of your response.

I have run into the Editing problem 3 times today when trying to correct spelling mistakes.

Hello @user_2e3502. Welcome to our amazing Xfinity Community forums page. We are happy you reached out to our team of assistance. We are sad to read you are having issues connecting your printer. You are in good hands, we can definitely help. :) We appreciate the steps you've tried already, it is super helpful as we do not want you to repeat anything you have tried. I'd like to share this resourceful link; https://www.xfinity.com/support/articles/connect-wireless-devices-third-party-router which will walk you through the steps to get your printer connected. Please let us know if this helped and if you have any questions. Our team is here 24/7. 

I have the exact same problem with two HP Printers - an HP OfficeJet Pro 8600 and an 8610. Both worked perfectly on my previous xfinity CGM4331COM that had started to fail. We just upgraded to the newer 10G router yesterday, with what we had thought was the most painless upgrade, transferring all of the previous router configuration to the new router, including all of the previously recognized MAC addresses on our extensive 25-node SOHO network, with the exception of our printers.

We went through the normal process of trying to add the prrinters back to the network and hit the 'MAC address filtering may be enabled" error, preventing the printers from being added to the network. Trying to manually add the printers to the network also is a complete repro failure. Yes, our network is segmented out at the router, and we are using the 2.4gHz band for the printers as before and the same SSID.

I believe this is an actual bug in the network configuration transfer process, as this was never an issue with the previous router, and this problem is persistent for both printers.