HP 7100 printer no longer "available"?
I am on macOS 12.1 We have an HP 7100 printer, purchased from Apple in 2019, and working wonderfully with various macOS and iOS devices, always via wifi, until today.
Today, if I try to list printers in System Preferences, I am informed that "no printers are available". HP's Easy Start app finds "no devices". The HP Smart app could previously see the printer, but now says the printer is offline, even though it is powered up and ready to print. Everything looks completely normal at the printer control screen.
The iMac I am sitting at can see Bonjour printers back at the office, over a VPN connection, but can't see the HP sitting across the room, which makes me wonder if Bonjour on the HP is not working.
Thanks in advance for any suggestions.