USB Printer is missing on Windows 10 version 1903 and later (with workaround)

If you run a device with Windows 10 version 1903 or later, e.g. Windows 10 version 2004, and use an USB printer, you may notice that the printer is sometimes missing when you try to print.

The printer port is missing on affected devices. Windows 10 users may check the printer ports on the device in the following way: select Start > Settings (gear icon) > Devices > Printers & Scanners > Print Server Properties > switch to the Ports tab.

Check for any USB port in the list. The affected printer and the USB port that it is connected to should not be displayed on the page.

usb printer missing windows 10

Microsoft describes the symptom in the following way:

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.

The printer cannot be used for printing tasks or other tasks because of the missing USB printer port.

Microsoft lists the following cause for the issue:

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 fulfill 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 fulfill operations dependent on the existence of the port.

There is a workaround for the issue, and it is quite easy to apply. All that needs to be done is to connect the USB printer to the PC and power it on before Windows is started. If that is done, Windows will recognize the USB printer and printing functionality as well as other functionality provided by the printer is available during the session.

Microsoft is working on a permanent fix for the issue and plans to release it as part of a future Windows 10 operating system update.

The latest feature update for Windows 10 that Microsoft released last month has lots of open issues as well.

Now You: How is your experience with printers on Windows? (via Deskmodder)

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June 11, 2020
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