Summary: Printing to a remote printer used to work: now it doesn't.
MacOS 10.13.6 (I can't upgrade with this iMac hardware).
PC Windows 10
HP printer: HP Laserjet 1606 dn
TP-Link router / wifi
PC and printer are in one part of the house; Mac and router are in a different part of the house.
The printer is connected to the PC via USB (too far for ethernet cable without climbing into the attic)
The PC uses WiFi to connect to the router
The Mac is hardwired to the router
PC is configured for print sharing
Mac - printer was added under printers & scanners preferences, using Windows / workgroup / PC name / printer share name
share this printer on the network is checked
I used to be able to print. I had the pritner name as my default printer. I would enter a User name and Password. Even though a message would pop up in the printer window: "Printing - Couldn't open fifo (2)", the printed document would come out just fine.
Then one day it didn't. I can't think of a change in the configuration that could be the culprit.
Now the printer is "Paused" and the "Ready to Print" is displayed. The document is waiting in the job queue (Mac Window). nothing appears in the printer queue on the PC. If I click "Resume", the message "Printing - Couldn't open fifo (2)" is displayed briefly and then it reverts to "Ready to Print" with the document still in the job queue.
The printer works just fine from the PC. I can access files on the PC from the Mac. TeamViewer between PC and Mac works fine.
Any ideas on how to get the printer connection to work without installing a new router in the PC/printer room.?