How to: Stop an Instance of Notification Services (Command Prompt)
Each instance of Notification Services has an engine on each server that runs a hosted event provider, generator, or distributor. Typically, the NS$instanceName Microsoft Windows service runs the Notification Services engine. One way to stop a Windows service is by using Windows Server services commands.
This procedure does not apply to clusters. On a cluster, you must use Cluster Administrator to stop the Generic Service that is configured to run the instance's Windows service.
To stop an instance of Notification Services
From a command prompt, type:
**net stop NS$**instanceName