Installing a specific, older driver version on modern Windows (10/11) can be tricky because Windows Update aggressively tries to update it to the "latest" version. Here is the correct procedure:
Locate a trusted source for the driver. Ideally, this should be the official website of the chipset manufacturer (Prolific, FTDI, etc.) or the vendor who sold you the adapter. Download the v6.3.2 package and extract the files to a folder on your desktop. usb-com driver v6.3.2