Run the following command from an elevated Command Prompt:

Download the driver package. It typically includes:

Here is the "deep story" of the hardware, along with the official path to the drivers you need. The Official Driver Source

. This driver supports both the parallel (LPT) and serial (COM) ports provided by the chip. Official Download Links You can download the driver directly from the manufacturer, Nanjing Qinheng Microelectronics (WCH) CH38XDRV.ZIP (Official Download)

file and select "Run as administrator" to ensure the driver has permission to modify system port settings. Check Device Manager

If you'd like to troubleshoot further, tell me you are running or what specific device you are trying to connect via the parallel port. Knowing if you encounter any specific error codes will also help tailor the solution. Share public link