Customer had an issue when an administrator customizes the Winuser or Worker console to disable the SelfEnrollement and sets allowSelfEnrollment="no", it is not acknowledged. The users are still getting prompted to Self Enroll on their first time visiting the Console. Now this is available in applying sp5 for Helpdesk version 6.0.308.
After applying support pack sp5 6.0.308 you have the ability to disable self enrollment.
To disable SelfEnrollment for Helpdesk you will need to edit the web.config file. Depending on what type of users you want to prevent SelfEnrollment for, you will want to edit the web.config file in either or both <Altiris_installation_drive>:\Program Files\Altiris\Helpdesk\AeXHD\winuser for end users and <Altiris_installation_drive>:\Program Files\Altiris\AeXHD\worker for workers.
You will need to find the line that contains
In this line you will then look for the attribute allowSelfEnrollment=''. If it is not there you will need to add it to the line and set it to = never.