Security in a domain or Notification server has changed, now the "Altiris Agent Service" on the Workstation will not start. In the agent.log you will see errors similar to the following:
<event date='Sep 29 09:26:49' severity='1' hostName='<CLIENTmachine>' source='ComService' module='aexnsagent.exe' process='aexnsagent.exe' pid='1180' thread='1212' tickCount='110984' >
<![CDATA[Unexpected error in ServiceMain: Failed to register class objects: The class is configured to run as a security id different from the caller (-2147467243)]]>
</event>
<event date='Sep 29 09:26:49' severity='1' hostName='<CLIENTmachine>' source='AeXAgentActivate' module='AeXAgentActivate.exe' process='AeXAgentActivate.exe' pid='1128' thread='1132' tickCount='111000' >
<![CDATA[Error activating agent session 0: Access is denied. (-2147024891)]]>
</event>
Unexpected error in ServiceMain: Failed to register class objects: The class is configured to run as a security id different from the caller (-2147467243)
Error activating agent session 0: Access is denied. (-2147024891)
NS 7.x, 8.x with one or more domains.
Security in one of the domains or the notification server changed. Now Workstations are not able to start the Altiris Agent Services.