COM+ Event System (EventSystem) Service Defaults in Windows 10

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. If this service is disabled, any services that explicitly depend on it will fail to start.

Default Settings

Startup type:Automatic
Display name:COM+ Event System
Service name:EventSystem
Service type:share
Error control:normal
Object:NT AUTHORITY\LocalService
Path:%SystemRoot%\system32\svchost.exe -k LocalService
File:%SystemRoot%\system32\es.dll
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\EventSystem
Privileges:
  • SeChangeNotifyPrivilege
  • SeImpersonatePrivilege

Default Behavior

COM+ Event System is a Win32 service. In Windows 10 it is starting automatically when the operating system starts. Then the COM+ Event System service is running as NT AUTHORITY\LocalService in a shared process of svchost.exe along with other services. If COM+ Event System fails to start, the failure details are being recorded into Event Log. Then Windows 10 will start up and notify the user that the EventSystem service has failed to start due to the error.

Dependencies

COM+ Event System cannot be started under any conditions, if the Remote Procedure Call (RPC) service is disabled.

While COM+ Event System is stopped, disabled or working incorrectly, the following services do not start:

Restore Default Startup Configuration for COM+ Event System

1. Select your Windows 10 edition and release, and then click Download.

2. Save the Win10_EventSystem_Service_Startup.cmd file to a local storage device.

3. Run the saved file as an administrator.

4. Restart the computer.

The EventSystem service is using the es.dll file that is located in the %WinDir%\system32 folder. If the file is changed, damaged or deleted, you can restore its original version from Windows 10 installation media.