Installing drivers for the OP-COM 1.99 interface on Windows 10 is notoriously tricky because clone devices often use unsigned drivers that Windows 64-bit systems block by default.

Installing OP-COM 1.99 drivers on Windows 10 requires bypassing Microsoft's driver signature enforcement, as these drivers are typically unsigned "China Clone" versions

Why are OPCOM 1.99 Drivers Needed?

1. Understanding the Problem: Why Windows 10 Rejects OP-COM 1.99 Drivers

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:

Since OPCOM 1.99 is older hardware/drivers, Windows 10 often blocks or fails to install them automatically. Below is a step-by-step feature guide to successfully install OPCOM 1.99 drivers on Windows 10.

Once Windows has rebooted in this mode, follow these steps to manually link the drivers:

The software opens, the relays in the little black box click, and suddenly, your laptop is speaking fluent Vauxhall/Opel.

OP-COM 1.99 drivers for Windows 10

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).”