batcmd.com Windows Vista Services

COM+ Event System - Windows Vista Service

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.

This service also exists in Windows 10, 7, 8 and XP.

Startup Type

Windows Vista edition without SP SP1 SP2
Starter Automatic Automatic Automatic
Home Basic Automatic Automatic Automatic
Home Premium Automatic Automatic Automatic
Business Automatic Automatic Automatic
Ultimate Automatic Automatic Automatic

Default Properties

Display name:COM+ Event System
Service name:EventSystem
Type:share
Path:%WinDir%\system32\svchost.exe -k LocalService
File:%WinDir%\system32\es.dll
Error control:normal
Object:NT AUTHORITY\LocalService
Privileges:
  • SeChangeNotifyPrivilege
  • SeImpersonatePrivilege

Default Behavior

COM+ Event System logs on as NT AUTHORITY\LocalService and runs in a shared process of svchost.exe. If COM+ Event System fails to start, the error is recorded into the Event Log. Windows Vista startup proceeds, but a message box is displayed informing you that the EventSystem service has failed to start. If you disable this service, then 5 other services will be unable to start (see the "Dependencies" section below).

Dependencies

COM+ Event System will not start, if the Remote Procedure Call (RPC) service is stopped or disabled.

If the COM+ Event System is stopped, the following services will not start and initialize:

Restore Default Startup Type for COM+ Event System

Automated Restore

1. Select your Windows Vista edition and Service Pack, and then click on the Download button below.

2. Save the RestoreCOMEventSystemWindowsVista.bat file to any folder on your hard drive.

3. Right-click the downloaded batch file and select Run as administrator.

4. Restart the computer to save changes.

Note. Make sure that the es.dll file exists in the %WinDir%\system32 folder. If this file is missing you can try to restore it from your Windows Vista installation media.