The latest June update of Windows 10 appears to have resulted in an obscure USB printer problem.

Microsoft has published an advisory, and, I understand that it is planning an early fix.

If you connect a USB printer to Windows 10 version 1903 or later, then shut down Windows and disconnect or shut off the printer, when you start Windows again the USB printer port will not be available in the list of printer ports. Windows will not be able to complete any task that requires that port.

Advisory [support.microsoft.com...]