Before installing any software or drivers, you need to temporarily disable Windows' driver signature enforcement. Here's the most reliable method:

Open Device Manager: Right-click the Start button and select Device Manager.

For everyone else, follow this guide and enjoy full dealer-level power from your Windows 10 laptop—for a fraction of the cost.

OP-COM is a PC-based diagnostic program designed primarily for General Motors Europe vehicles. The hardware interface functions as an intelligent multiplexer, automatically switching between the various communication pins located in a standard OBD-II diagnostic port.

It's important to be upfront: a major hurdle is that Opcom interfaces almost never come with drivers that are digitally signed for Windows 10. Many users have encountered problems where their computer simply won't recognize the device.

Right-click, select > Browse my computer for drivers .

OP-COM is a PC-based diagnostic program designed specifically for Opel and Vauxhall vehicles, covering models from old 8-bit OBD systems to modern CAN-BUS vehicles. The "1.99" designation refers to the firmware flashed onto the China-Clone hardware interface.

Many software versions bundled with clone tools include an automatic firmware update feature. Never click "Update Firmware" online or use genuine OP-COM software updates on a clone interface. Doing so will overwrite the clone's microcontroller data, permanently bricking the device.

Look for a device with a yellow warning triangle, usually listed as or FT232R USB UART under "Other devices". Right-click the device and select Update driver . Choose Browse my computer for drivers .

This procedure uses the and a patched version of OPCOM software that bypasses Windows 10’s driver enforcement.