USB Printer port disappears after disconnecting printer while shutting down your Windows 10 (version 1903 or later)
Microsoft recently launched Windows 10 May 2020 update aka 2004 that resided multiple bugs with the network adapter and system. The customers also reported about their PC/Laptop being restarting automatically after installing the latest update. Microsoft blocked users to download the May 2020 update as soon as they got to know about the bug, While now the company has launched a new feature too that notifies you if your PC/Laptop can install the 2004 Windows 10 update or not.
Yesterday we saw How to fix Windows 10 version 2004 Update error 0x80073712. While today we found that Microsoft support published an article on its blog saying USB printer port missing after disconnecting printer while Windows 10 (version 1903 or later) is shut down. Microsoft said the issue was repeatedly spotted on Windows 10, version 1903, all editions, Windows 10, version 1909, all editions, Windows 10, version 2004, all editions.
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.
The list of printer ports can be found at: Start > Settings (gear icon) > Devices > Printers & Scanners > Print Server Properties > Port tab.
The company said 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.
You can check the Microsoft support article about the issue from here
Lastly to resolve the issue the support team said that you can avoid the issue by connecting a powered-on USB printer before starting Windows. The company said its developers are working on fixing the issue as soon as possible. For further updates on the issue stay tuned on Android Rookies. You can also subscribe to our newsletter from here to stay updated on tech and cybersecurity news.