Problem:
User deferral in the delivery method does not work correctly. It seems to take on a life of it's own.
Solution:
1) Remove the machine from the task
2) Run a policy sync on the machine in question.
This will typically do it for you. If for some reason it does not, this indicates an issue with the ClientDB, it should be purged using the PurgeClientDB.ini against the machine.
Instructions on how to run the PurgeClientDB.ini can be found at the following link.
Need the Clear_Task_Queue script to kill a hung job
****This only affects LDMS 9.5 and older. As of LDMS 9.6 there is no longer a Policy Database on the client machines.