Ahha!!
the printers are on different sorts of ports! old on TCIP, new one (with problems) WSD.
Here are comments (
https://www.urtech.ca/2013/09/solve...-a-tcpip-printer-port-and-a-wsd-printer-port/)
- "TCP/IP is you telling your printer what to do. WSD is microsoft screwing things up when you didn’t ask them to" - more inverstigation required.
- The printer was installed as a network printer (i.e. not a shared printer). I
could print to the printer, but the printed document would not be removed from the printer queue and the printer would hang until I manually deleted the document from the printer queue. It turns out, that when I added the new printer to my computer, the printer got configured with a WSD Printer Monitor port. (I did select “autodiscovery” when I added the new printer driver) When I change the printer configuration to use a TCP/IP Printer port, everything started working fine. That’s what lead me to ask the question what is a WSD Printer? and why would I want one? This article did a great job of explaining that.
HP LaserJet Pro m404n - on a small Windows-10 Pro (64-bit) peer network with AT&T Uverse fiber-broadband..
WSD not working 100% on some machines, including those running new v1903 upgrade.
Set fixed-IP address on HP (like my other wired printers).
Login to it’s IP from computer and Disable “Microsoft WSD Print” in Advanced Settings.
I left the other option: “Microsoft WS-Discovery” Enabled.
Reboot everything.