Submitted by johnlennon99 • April 13, 2018
goo.gl
Firewalls are intended to block threats from outside your network, but can sometimes block communication between devices on your network and cause problems when using network printers. Problems you might experience with firewalls include not being able print, the printer not being found on the network, or the printer status displays as being disconnected or offline, even though the printer is connected to the network. You can use the HP Print and Scan Doctor to troubleshoot issues with the firewall.