From: DamL on
Hi, to ease solution, here is the contents of setupact.log retrieved
after installation try of USB device. No error message appears clearly :

WdfCoInstaller: [09/07/2010 17:08.52.769] DIF_INSTALLDEVICE: Pre-Processing

WdfCoInstaller: [09/07/2010 17:08.52.780] ReadComponents: WdfSection
for Driver Service TestUserDriver using KMDF lib version Major 0x1,
minor 0x5

WdfCoInstaller: [09/07/2010 17:08.53.766] DIF_INSTALLDEVICE: Post-Processing

In setupapi.dev.log (windows\inf directory) here is some:

dvi: {Select Best Driver - exit(0x00000000)}
dvi: Default installer: Exit
dvi: {DIF_SELECTBESTCOMPATDRV - exit(0x00000000)}
10:07:38.654
dvi: {DIF_NEWDEVICEWIZARD_FINISHINSTALL} 10:07:38.655
dvi: Class installer: Enter 10:07:38.656
dvi: Class installer: Exit
dvi: Default installer: Enter 10:07:38.661
dvi: Default installer: Exit
dvi: {DIF_NEWDEVICEWIZARD_FINISHINSTALL -
exit(0xe000020e)} 10:07:38.662
ndv: Device install status=0x00000000
ndv: Performing device install final cleanup...
ndv: {Core Device Install - exit(0x00000000)}
dvi: {DIF_DESTROYPRIVATEDATA} 10:07:38.671
dvi: Class installer: Enter 10:07:38.672
dvi: Class installer: Exit
dvi: Default installer: Enter 10:07:38.678
dvi: Default installer: Exit
dvi: {DIF_DESTROYPRIVATEDATA - exit(0xe000020e)} 10:07:38.679
ump: Server install process exited with code 0x00000000
10:07:38.690
ump: {Plug and Play Service: Device Install exit(00000000)}
dvi: {DIF_DESTROYPRIVATEDATA} 10:07:38.701
dvi: Class installer: Enter 10:07:38.702
dvi: Class installer: Exit
dvi: Default installer: Enter 10:07:38.708
dvi: Default installer: Exit
dvi: {DIF_DESTROYPRIVATEDATA - exit(0xe000020e)} 10:07:38.709