The CA_Workload_Automation_7599 service times out and does not start.
During startup the DE Server tracks and logs all active jobs and applications.
After an outage where the connection to the database was lost, over 10000 active jobs accumulated in WAITING, PREDWAIT and other active statues.
The DE Server was unable to complete it's initialization within the 600 default seconds due to the unusually large amount of active jobs.
Edit the "<DE_install_dir>\WorkloadAutomation*\conf\windows.service.properties" file.
The default timeout setting is:
Increase the above value until the server is able to start. For example;
For 10000+ jobs, the CA_Workload_Automation_7599 service was observed to take 1834 seconds to start.