Do you have recurring batch tasks stuck in standby and can't get rid of them?  You hit purge and they are still there?  Did you change parameters on a recurring task but when you try to restart the task it tells you the task is already running?  Well, let me show you what to do.

1. Go to Administration, Administration, Endpoints, Batch server
2. Click on the three dots next to the batch controller
3. Choose List of queries
4. Click on the three dots next to the job in Standby
5. Choose Delete