I tested 2 ways:
1) Define my own CUSTOM user (in my case, the user ID is abcde). Then I submit the getticket action:
And a ticket return.
User ID should be given in the first getticket action and I believe QVS remember this User ID is associated with this ticket and will give authorization to this User ID.
2) Use the existing AD ID and doing the same as above, it can display the Access Point without any problem. But when I selected one of the reports, it prompts for login ID again just like the case I describe above. But different behaviour is even I clicked 'CANCEL" and "fail to authenticate" message is returned, but I am still able to open the report. Currently, we are thinking if this is due to the Windows securty setup.
Read through this and see if the information will help you any.