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. 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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