Hi. I suspect that you might be mixing Windows authentication users with Basic users. Please see if the VideoViewer sample using a login dialog works for you,
also see if the CameraStreamResolution sample using a hardcoded login works for you.
The user, jinmin is a Basic user and able to login both management client and smart client.
But, the same user is not able to login through SDK programming.
Using MIPLibrary login dialog, this user, jinmin has no problem login.