Tutorial_WorkflowProcessor usage in AX 2012

Check under system administration if the BC proxy and workflow excecution account are still valid.

Check under server configuration if at least one of your AOS servers is a batch server with at least one core active.

Check under batch groups to see if they ar designated to your AOS batch server.

Check your batch jobs and make shure that the account registered in the "createdby" column is still valid and active.

Check if the batch jobs are registered to a batch group wich is correctly configured.