Download the latest Virtual COM Port (VCP) drivers from the FTDI Official Site . Use the "Windows (Desktop)" executable for the easiest installation.
If the driver fails to install on 64-bit Windows, you may need to restart Windows with "Disable driver signature enforcement" enabled via the Advanced Startup menu. Software Compatibility:
This usually indicates a driver signing failure (see Issue 1) or that a previous driver installation attempt left corrupted entries.
This cable is a popular "dumb" interface for use with free or third-party diagnostic software like VCDS-Lite.
If your cable uses the CH340 chip, do not let Windows Update find the driver. Download the CH341SER.EXE installer. Right-click the installer and select Run as Administrator. Once installed, the device should appear in Device Manager as USB-SERIAL CH340 (COMX). Installing the FTDI Driver
FTDI FT232: Usually found in higher-quality cables. These are more stable on 64-bit systems.CH340/CH341: Found in the most common "blue cables." These require specific Chinese-manufactured drivers to work on Windows 10. Step-by-Step Installation for Windows 10 64-bit Disable Driver Signature Enforcement
If you see this error when running the installer, it often indicates a driver signing issue on Windows 10. You may need to temporarily disable driver signature enforcement:
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