Hello

Open services.msc and you should find four services that start with DSM Essentials. If you stop those four services then OME will stop.

DSM Essentials DA Service  Provides a communication layer between IIS and the other windows services..
DSM Essentials Host Service Provides database maintenance and caching for Essentials.
DSM Essentials Network Monitor Provides network discovery and event management for Essentials.
DSM Essentials Task Manager Provides task framework to run various tasks against the remote devices.

Thanks

Thanks very much.