Silent .inf install with dpinst.exe failed
I have to install the driver for DFG/USB2pro Video2USB Converter  silently (SCCM).
For any oher driver I used before dpinst.exe /s works very well.
I used dpinst /S /F /C and the output is:
INFO: Returning with code 0x8001000
According to this  it means "One driver package was present, but it could not be installed"
If I just ran dpinst.exe in window mode the message "Are you sure you wanne install softwarefrom The Imaging Source...Company" appears and if I check the box "install everything from this vendor" and hit "install" the driver will be successfully installed.
I also tried /LM but its the same issue (WARNING:DRIVER_PACKAGE_LEGACY_MODE flag set but not supported on Longhorn. Flag will be ignored)
System is Win7 x86.
Sorry for my bad english.