You schedule a task on a computer that is running Windows Vista or Windows Server 2008. However, the scheduled task is forcibly canceled by the TaskEng.exe process. Additionally, the following events are logged:

Event ID: 330
Source: Microsoft-Windows-TaskScheduler
Message: Task Scheduler stopped the instance name instance of task task name as request by user user name.

Event ID: 111
Source: Microsoft-Windows-TaskScheduler
Message: Task Scheduler terminated the instance name instance of the task name task.