What is "COM+ Event System" in my Windows 8 service list? And how is "COM+ Event System" service related to es.dll?

"COM+ Event System" is a Windows 8 service that supports System Event Notification Service (SENS), which provides automatic distribution of events to subscribing Component Object Model (COM) components. If the service is stopped, SENS will close and will not be able to provide logon and logoff notifications. "COM+ Event System" service is provided by es.dll DLL file.

Detailed information on "COM+ Event System" service:

Service name: EventSystem
Display name: COM+ Event System
Execution command: C:\Windows\system32\svchost.exe -k LocalService
Start type: Automatic
Service status: Started
Dependencies:
   Remote Procedure Call (RPC)

"COM+ Event System" service is provided by a DLL file called: es.dll:

Name: es.dll
Location: C:\Windows\System32\es.dll
Description: COM+
File version: 6.2.9200.16385
Size: 507,904 bytes
Modified: Wednesday, ‎July ‎25, ‎2012, ‏‎11:05:36 PM

Disabling "COM+ Event System" service may cause issues when running Windows 8 system.

⇒"svchost.exe -k LocalService" Services on Windows 8

⇒⇒Windows 8 Services Tutorials