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Instead of fighting drivers, use:
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. opcom 1.99 drivers windows 10
Drivers alone are useless without the right software configuration. Instead of fighting drivers, use: This guide assumes
Troubleshooting software errors:
| Error Code | Message | Solution |
|------------|---------|----------|
| Code 10 | This device cannot start | Reinstall legacy driver (2.8.30.0) after disabling signature enforcement. |
| Code 52 | Driver digitally signed incorrectly | You skipped Stage 1 – reboot with signature enforcement disabled. |
| Code 43 | Windows has stopped this device | Your FTDI chip is bricked by a newer driver. Use FTDI’s CDM Uninstaller tool to remove all FTDI drivers, then reinstall legacy version. |
| No exclamation mark but no COM port | Device seen as “FTDI FT232R” under Universal Serial Bus devices | Right-click > Uninstall device > Reinstall using “Have Disk” method. | Troubleshooting software errors:
Once you have OP-COM 1.99 running on Windows 10:
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