The authentication server returned an unexpected error
When you see this:
The authentication server returned an unexpected error: ns0:RequestFailed: IDM threw unexpected error during authentication :: Native platform error [code: 9234][null][null]. The error may be caused by a malfunctioning identity source.
it can also mean a bad user/password combination:
domain\user01
pass
instead of something like this:
rightdomain\user01
pass
Cheers,
TK