Was suddenly unable to print from #Win10. Tried all the standard tricks.

Then I realized what happened. Two routers / #Wi-Fi access points. When The computer connects to the closer of the two, the #WSD port decides the printer is "offline", even though I can view the printer's configuration web page with a browser. Went back to reliable TCP/IP port and multiple jobs flowed out of the print queue.

It's been a few years since I had to replace WSD (Web Services for Devices) port monitors to make printers work. Putting this back in my toolbox.