On 12 June, The Recycler reported about the issue which effected the USB printer port which was missing after disconnecting printer while Windows 10 (version 1903 or later) is shut down.
Microsoft reported the issue with Windows 10 (version 1903 or later) that affects the USB printer port which is missing after disconnecting printer while Windows is shut down.
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. This problem applies to all editions of Windows 10, version 1903, version 1909 and version 2004.
The problem is caused if the driver for the USB printer contains a Language Monitor, the OpenPortEx callback function of the Language Monitor would not be called. As a result, the user cannot fulfil operations dependent on the operation of the Language Monitor.
In the “Devices and Printers” control panel, when selecting [Print Server Properties] > [Port] tab, the port for the USB printer (such as “USB001”) would not appear in the list of printer ports. As a result, the user cannot fulfil operations dependent on the existence of the port.
The list of printer ports can be found at: Start > Settings (gear icon) > Devices > Printers & Scanners > Print Server Properties > Port tab.
Today, Microsoft said Windows 10 KB4567512 for version 1909/1903 and KB4567513 for version 1809 will address printer-related issues on your system. The hotfix for Windows 10’s print spooler issue is only available for those who manually download it from Microsoft’s Update Catalogue.
