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Crucial: How to Stop Windows Update from Breaking the Driver

moves toward more stringent driver signing requirements, the window of compatibility for version 3.2.0.0 is narrowing. Prolific currently recommends transitioning to the PL2303GC chipset

Windows Update may attempt to "correct" your driver by installing the latest (non-functional) version. To prevent this: prolific+usb+to+serial+comm+port+version+32+00+download+2021

: Search for the Prolific USB-to-Serial Driver v3.2.0.0 (often found in legacy driver packs for radio programming like CHIRP or GitHub repositories).

Why it mattered

: The yellow exclamation mark should disappear, and the status should read "This device is working properly." Key Resources for Download & Troubleshooting Double-click

Since Prolific's official site often only hosts the latest version, you should look for the or the PL2303_Prolific_DriverInstaller_v1.x.x package from reputable driver archives.

Prolific Technology Inc. is a fabless IC design house, recognized as a global leader in USB technology. They specialize in developing USB-to-UART, I2C, and SPI bridge controllers, which are the core chips inside the small "USB-to-Serial" adapters that connect modern computers to older RS-232 serial devices.

: It converts USB signals into the RS-232 serial protocol required by older devices like radios, GPS units, and industrial equipment. Virtual COM Mapping To prevent this: : Search for the Prolific

Find your entry, which will likely show a yellow warning icon next to . Right-click the item and choose Update driver . Click Browse my computer for driver software .

First, locate and download the genuine executable package from a reputable repository, such as the public ham radio documentation archives hosted by VE7ED Prolific Resources or the compatibility scripts on TheAmberLion GitHub Repository . Save the file into a dedicated folder on your desktop, but do not plug in your USB cable yet . Step 2: Install the Driver Setup Package

, select "Update Driver," and choose "Let me pick from a list of available drivers on my computer". Persistence

The remains a gold-standard workaround for reviving legacy hardware components. By forcing Windows to communicate via this older, highly compatible architecture, you can extract years of extra utility out of perfectly fine hardware tools.

Windows configuration policies aggressively update old drivers. If you do not lock down version 3.2.0.0, Windows Update will overwrite it within days, throwing the Code 10 error right back onto your screen. Method A: Use Group Policy Editor (Windows Pro/Enterprise) Press Windows Key + R , type gpedit.msc , and hit Enter.