Mac OS 10.15 can't find OfficeJet 5255 on WIFI network

[mammentorp]

I have an OfficeJet 5255 connected to a Netgear WAC124 WIFI Router.  I can see the printer in the connected devices list, and it has a valid IP address.  I can not, however, find the printer from my MacBook Pro (Catalina OS) using either System Preferences/add a printer or using HP Smart.  I had this printer working prior to upgrading my cable connection to the Netgear WAC124 and Netgear cable modem.  Everything else about the network works great.  I'm at a loss and looking for direction!!??

[Echo_Lake]

@mammentorp

Thank you for posting on the HP Support Community.
 

Don't worry as I'll be glad to help, to provide an accurate resolution, I need a few more details:

• 1.) Are the printer and Mac connected to the same network?
• 2.) Is your router dual-band enabled i.e., both 2.4GHz and 5GHz? If yes, make sure the dual-band has different SSIDs for 2.4G and 5G networks.
• 3.) What is the distance between the router and the printer?

While you respond to that, let's try these steps: Perform a ping test to check the connectivity

1. Click Applications > Utilities > Terminal.
2. type ping "IP address" and press enter

Wait until 10 pings have been performed and then press ctrl c on the keyboard and hit return. 
The results will appear. Share the ping test results.
 

The wireless status menu on your Mac should also give us quite a lot of information that would help us identify the issue. You can press and hold option-click the WiFi icon and then use shift-command-5 to take the screenshot. Press the space bar when the icon turns into a camera. Share the ping test results and the screenshot with us.

Also, check with your Internet service provider if your router is able to forward 'Bonjour packets'.  Bonjour locates devices such as printers, other computers, and the services that those devices offer on a local network using multicast Domain Name System (mDNS) service records. The software comes built-in with Apple's macOS and iOS operating systems. 

Hope this helps! Keep me posted for further assistance.
Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution. Click the “Kudos, Thumbs Up" on the bottom right to say “Thanks” for helping!

[mammentorp]

Thank you for the replay and advice.  I was able to get this printer connected and working.  The problem was, the WIFI router was configured with "client isolation" turned on.  While I could see all IP addresses from the management console, the end point IP addresses could not communicate with each other.

[Echo_Lake]

@mammentorp

Thank you for posting back.
 

I am glad to know that you managed to resolve the issue. Please reach out again for any further assistance.
 

If you would like to thank us for our efforts to help you, go to the public post & give us a virtual high-five by clicking the "Thumbs Up" icon below, followed by clicking on the "Accept as solution" on my public post.

Have a great day ahead!