How to make TaskScheduler fail when the task returns result different from 0
It is possible to "restart" the task if it fails.
Use following code in the batch script to create a system error event:
eventcreate /ID 100 /SO "Your Script Name" /L APPLICATION /T ERROR /D "Your failure reason"
Create a new task with a trigger that monitors the system events and filter for the category and ID you just added in the batch. The action of this task is the batch again. This task should be delayed by one minute, so that the same batch is not started twice!
Be careful not to create an infinite loop.
Hope that helps!
If Task Scheduler successfully launches the task and the launched program exits, then from the point of view of the Task Scheduler it was a success (i.e., nothing bad happened like a failed user credential starting the program).
Normally if you want to monitor for something bad that happened during a program run you would either have the program send an alert of some sort (e.g., via email or by logging to a file that you later review), or else setup another program to monitor something about the program run that could indicate whether an error occurred.
What sort of notification of an error are you trying to get? Are you doing a manual review but just trying to have the error be more noticeable? Or do you have another program monitoring for errors?