Opcom 1.99 Drivers Windows 10 May 2026

Before installing drivers, gather the following:

Warning: Disable Windows Update automatic driver installation before proceeding. Search “Change device installation settings” in Windows 10 and select “No (your device might not work as expected).”

Once you have OP-COM 1.99 running on Windows 10: opcom 1.99 drivers windows 10

This guide assumes you are using Windows 10 64-bit. The process is identical for 32-bit, but 64-bit requires extra steps due to stricter signing.

Some users have success replacing the FTDI driver with a generic WinUSB driver using Zadig: Before installing drivers, gather the following:

Note: This method breaks many OP-COM software versions that expect a pure COM port. Use only as a last resort.

To fix the problem, you must understand it. The original OP-COM 1.99 hardware uses a counterfeit or cloned FTDI chip. In 2016, Microsoft and FTDI collaborated to update Windows 10’s driver signature enforcement. As a result: Once you have OP-COM 1

Thus, the standard plug-and-play method fails. You need legacy drivers (typically version 2.8.30.0 or 2.8.24.0) and a disabled driver signature enforcement procedure.