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 shows the generic "Code 10" error. Unfortunately this decision also renders all earlier adapters inoperative. To solve this intellectual infringement - original Prolific company modified 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 you own contains a counterfeit "Prolific" chip (China clone). Even vendors selling their "USB to Serial" adapters are baffled. "Device driver was not successfully installed"Īvailable forum solutions to this problem are half-baked.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 picture, yellow triangle next to "Prolific USB-to-Serial Comm Port (COM X)". 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: In summary, this article is for: Windows XP, Windows 7, Windows 8, Windows 8.1 and Windows 10.
#Prolific usb to serial driver failed how to#
Purpose of this article is to guide you on how to FIX the "Prolific USB-to-Serial" driver issue with common cheap units.
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