Adaptive Brightness (SensrSvc) Service Defaults in Windows 7

Monitors ambient light sensors to detect changes in ambient light and adjust the display brightness. If this service is stopped or disabled, the display brightness will not adapt to lighting conditions.

Default Settings

Startup type:
Windows 7 Starter SP0N/A
Windows 7 Home BasicManual
Windows 7 Home PremiumManual
Windows 7 ProfessionalManual
Windows 7 UltimateManual
Windows 7 EnterpriseManual
Windows 7 Starter SP1N/A
Windows 7 Home Basic SP1Manual
Windows 7 Home Premium SP1Manual
Windows 7 Professional SP1Manual
Windows 7 Ultimate SP1Manual
Windows 7 Enterprise SP1Manual
Display name:Adaptive Brightness
Service name:SensrSvc
Service type:share
Error control:normal
Object:NT AUTHORITY\LocalService
Path:%SystemRoot%\system32\svchost.exe -k LocalServiceAndNoImpersonation
File:%SystemRoot%\system32\sensrsvc.dll
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SensrSvc
Privileges:
  • SeChangeNotifyPrivilege

Default Behavior

Adaptive Brightness is a Win32 service. In Windows 7 it won't be started if the user doesn't start it. When the Adaptive Brightness service is started, it is running as NT AUTHORITY\LocalService in a shared process of svchost.exe. Other system components, such as drivers and services, may run in the same process. If Adaptive Brightness fails to start, Windows 7 attempts to write the failure details into Event Log. Then Windows 7 startup should proceed and the user should be notified that the SensrSvc service is not running because of the error.

Restore Default Startup Configuration for Adaptive Brightness

1. Select your Windows 7 edition and service pack, and then click Download.

2. Save the Win7_SensrSvc_Service_Startup.cmd file to a local storage device.

3. Run the saved file as an administrator.

4. Restart the computer.

The SensrSvc service is using the sensrsvc.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 7 installation media.