prolific usb to serial comm port code 10

Or you may get no error at all, but your device will still not work. The Prolific 64-bit drivers that Microsoft supplies via Windows Update, Versions 3.4.67.325, 3.4.25.218, 2.1.51.238, and 3.4.62.293 will not work with most adapters and therefore issues the generic 'Code 10' error. Unfortunately this decision also renders all earlier adapters inoperative. To combat this, original Prolific company made changes to their newest drivers to render the counterfeit adapters unusable. The counterfeit chip use the same Vendor ID (VID_067B) and Product ID (PID_2303) as the authentic Prolific chips. Main cause of this issue is because the device contains a counterfeit 'Prolific' chip (made in China). Even companies selling these USB to Serial adapters are confused. Internet is filled with pages discussing this problem - but no one seems to know what causes it.

'Device driver was not successfully installed'.

Issue will also may show messages like this: This confirms you need to install correct driver file.) That means correct driver version is not installed.)Īnd if you double-click on it, you will see: (Notice in above pic, yellow triangle next to 'Prolific USB-to-Serial Comm Port (COM X)'.

In summary, this article is for: Windows XP, Windows 7, Windows 8, Windows 8.1 and Windows 10! Works on 32/64-bit.Īnd it addresses issue of: Prolific PL-2303 Driver Fix (VID_067B&PID_2303)ĭriver issue will show inside your Device Manager like this: Purpose of this article is to guide you on how to FIX the 'Prolific USB-to-Serial' driver issue with common cheap units.

Prolific usb to serial comm port code 10