Installing OP-COM 1.99 drivers on Windows 10 is a common challenge for Opel and Vauxhall owners due to modern security features and driver signing requirements. While the 1.99 firmware is popular for diagnostic tasks, getting it to communicate with a 64-bit Windows 10 system typically requires bypassing standard driver enforcement. Before starting, ensure you have the following: The OP-COM hardware interface (firmware 1.99).
| Problem | Solution | |--------|----------| | Device shows but no COM | Reinstall FTDI driver from FTDI Chip website (CDM v2.12.28) | | Driver installs but software can't connect | Change COM port in software settings to match Device Manager | | Windows reinstalls wrong driver | Use pnputil /delete-driver to remove conflicting driver | | Code 10 (device cannot start) | Uninstall device, unplug, restart, reinstall with signature enforcement disabled | opcom 1.99 drivers windows 10
After installation: