Hi,
So, which means that:
For unattended mode, you should not have any active user sessions (Locked user session) which means you have to Sign out all user sessions in that computer. In the unattended mode, PAD will automatically sign in and sign out. Please make sure you read it carefully because it is differences between unattended and attended.

For attended mode, the user session must not be locked, since you have to have an active user session so that when running the attended mode, it is something like this: you must look at your screen, if you locked your screen, then it would be failed.
Thanks and hope it can help you.
Mike
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