HP8620 says not connected to the internet was prior to changing modem security info

[Nina651]

HP8620 says printer is not connected to internet … recently changed modem security info… yellow light staying on… recognizes the modem address… error message says something about checking proxy 

[Echo_Lake]

@Nina651

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:

• 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.
• Have you used the Options button to check the wireless status?

The routers are probably not configured in bridge mode. It's likely a double NAT issue which means multiple routers are handing out IP addresses and causes a conflict. Bridge mode means the router acts as purely an access point and not a router. This document https://support.apple.com/en-us/HT202056 shows how to set up the network.  

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.

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.
 

You can also print a Wireless Network Test Report to find information about your printer network connection or to troubleshoot connection issues.

1. Print a Wireless Network Test Report:

   • Inkjet printers with a control panel menu: Open the Wireless, Network Settings, or Setup menu  to locate the list of available reports.

   • Most inkjet printers without a control panel menu: Press the Wireless  and Information  buttons at the same time, or press the Wireless  and Start Copy Black  buttons at the same time.

   • LaserJet printers: Press and hold the Wireless button  for 10 seconds or until the Ready light blinks, or go to the Wireless menu and select Wireless Network Test.

   • Laser NS and Neverstop Laser printers: Press and hold the Resume  and Wireless  buttons for 3 seconds.

   • DeskJet 6000 and 6400, ENVY 6000 and 6400, and Tango printers: Touch and hold the Information button  until all control panel buttons light up, and then touch the Information  and Resume  buttons at the same time.
      

2. Review the information on the report, and then follow any instructions provided to troubleshoot connectivity problems.

Hope this helps! Keep me posted for further assistance.
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