Some of the problems

[reclock]

hello, I want virtual a usb device.
I successfully compiled the project, I modified the PID and VID, and I manually installed hostude.inf and udefx2.inf.
UDRFX2: I modified,
#define UDEFX2_DEVICE_VENDOR_ID 0x6E, 0x09 // little endian
#define UDEFX2_DEVICE_PROD_ID 0x03, 0x03// little endian
hostude.inf: I modified,
%USB\VID_096E&PID_0303.DeviceDesc%=lxhostude.Dev, USB\VID_096E&PID_0303

then compiled all success.
And then I run it manually
devcon.exe install hostude.inf "USB\VID_096e&PID_0303"

devcon.exe install udefx2.inf Root\UDEFX2

I can see that in device manager

But I use usbview.exe to view it

Am I using it correctly?

[reclock]

I can successfully open the device using hostudetest.exe -a

[reclock]

How should I use it correctly?

[xxandy]

Sorry I'm so late - and maybe it won't matter anymore, but did you get your setup to run?
You should try it before changing the vid/pid first.