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Troubleshooting
1. Windows XP cannot find Drivers for My Device
This error can occur if the VID and PID programmed into the device EEPROM do not match those listed in the INF
files for the driver. The VID and PID programmed into the device EEPROM may be found by using the USB View
utility from the FTDI web site. These can then be checked against the VID and PID entries in the driver INF files. If
they do not match, that driver cannot be installed for that device without either reprogramming the device EEPROM
or modifying the list of VID and PID numbers in the INF files.
Please note that only your own company VID and PID or FTDI's VID (0x0403) and FTDI PID issued for use by your
company should be used in the EEPROM and INF/INI files.
End customers should obtain modified drivers from the OEM of the device, and not necessarily edit the files
themselves.
2. Windows XP Forces a Reboot after Installing a Device
This problem can occur if an application is accessing a file while the New Hardware Wizard is trying to copy it. This
usually occurs with the FTD2XX.DLL file. Selecting not to restart the computer then unplugging and re-plug the
device may allow the device to function properly without restarting. Restarting the machine will allow the device to
work correctly.
3. Driver Installation Fails and Windows XP Gives Error Code 10
Windows error code 10 indicates a hardware error or failed driver installation. This error may appear if a device has
insufficient power to operate correctly (e.g. plugged into a bus powered hub with other devices), or may indicate a
more serious hardware problem. Also, it may be indicative of USB root hub drivers being incorrectly installed.
Please refer to the example schematics on the FTDI web site for standard device configurations. If the error persists,
please contact the FTDI support department.
