Although mine is an Epson WF110, this Brother solution seems to have worked (I have two Brother printers not hooked up to USBs, so I'm ready if I ever need to reconfigure their connection).
Thanks for providing this.
I must rescind my original optimism here. The problem continues. It appears to happen less frequently than it used to but with precisely the same symptoms. My workaround of using the WiFi Direct connection will have to do. Yet another MS problem in the never-addressed bin.