System Event Notification Service (SENS) Defaults in Windows 8

Monitors system events and notifies subscribers to COM+ Event System of these events.

Default Settings

Startup type:Automatic
Display name:System Event Notification Service
Service name:SENS
Service type:share
Error control:normal
Path:%SystemRoot%\system32\svchost.exe -k netsvcs
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SENS
  • SeAuditPrivilege
  • SeChangeNotifyPrivilege
  • SeCreateGlobalPrivilege
  • SeImpersonatePrivilege
  • SeTcbPrivilege

Default Behavior

System Event Notification Service is a Win32 service. In Windows 8 it is starting automatically during the operating system startup. Then the System Event Notification Service runs as LocalSystem in a process of svchost.exe, sharing it with other services. If System Event Notification Service fails to start, the error details are added to Windows 8 error log. When the operating system startup is complete, the user is being notified that the SENS service hasn't been started.


System Event Notification Service can't start, if the COM+ Event System service is disabled or not available.

If System Event Notification Service is disabled, the COM+ System Application service will not be started and initialized.

Restore Default Startup Configuration for System Event Notification Service

1. Select your Windows 8 edition and update pack, and then click Download.

2. Save the Win8_SENS_Service_Startup.cmd file to a local storage device.

3. Run the saved file as an administrator.

4. Restart the computer.

The SENS service is using the sens.dll file that is located in the %WinDir%\System32 folder. If the file is corrupted or deleted, you can put it back in there.