Got some schedules in my Cognos environment who failed with the message:
CNC-SDS-0413 There was a problem in executing the task. The user authentication failed. It may not be possible to rerun the task.
To solve this I followed the next steps:
1. Renew the credentials (see how on this article)
2. Go to System Administration
3. Click on Schedules
4. Find the schedule with the error in the list
5. Click on the small blue triangle
6. Choose modify the schedule
7. Change nothing
8. Click OK to save the schedule
After that you can check the schedule on the next upcomming event.