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The most reliable way to fix this is to visit the official support pages of the chipset manufacturer.
: Visit the Prolific Support Page for the latest PL2303 DCHU drivers for Windows 10 and 11.
: If the latest driver fails (common with older/clone chips), choose "Let me pick from a list of available drivers on my computer" and try selecting an older version (e.g., v3.3.x from 2008) if available. Microsoft Learn Note on Older Hardware: Usb Serial Controller D Driver Download
: Select "Browse my computer for drivers" and point it to the folder where you extracted the downloaded driver files. Pick from List
Remember these golden rules:
If you prefer not to download third-party software, try the built-in Windows update: Right-click the button and select Device Manager .
Microsoft began enforcing driver signature requirements aggressively starting with Windows 10 version 1709 and Windows 11. Older, unsigned, or poorly signed drivers (common with many Prolific clones) are blocked automatically. The most reliable way to fix this is
Last updated: 2025. Compatible with Windows 11 23H2, Windows 10 22H2, and Windows 8.1.
FTDI chips are the gold standard for USB-to-Serial adapters. They are known for reliability and high compatibility. Microsoft Learn Note on Older Hardware: : Select