My older HP D110 printer will recognize my new BGW320 Gateway but will not take Security Code.

[mags48]

My older HP D110 printer will not recognize passcode on my new fiber optic BGW320 gateway. Test Report says SECURITY FAIL. I have tried  Setup Wizard and contacted AT&T. They split to 2.4 & 5 to see if printer would recognize on 2.4   Still would not take password.

[Echo_Lake]

@mags48

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:

• Could you share the screen where it's asking for the password?
• What is the distance between the router and the printer?

This printer supports WPA encryption, check if the router is on the same encryption method. If using WEP or WPA-PSK+FT change it to WPA-PSK

In addition, 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 Wi-Fi 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, and 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. 
 

Note: Drivers are limited for this printer click here: https://support.hp.com/in-en/drivers/selfservice/hp-photosmart-e-all-in-one-printer-series-d110/4023...  to know more about Software and drivers.
 

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!