Reduce display brightness (on battery)
- Policy ID
- DisplayDimTimeOutDC
- Scope
- Computer Configuration
- Supported on
- At least Windows Server 2008 R2 or Windows 7
- Source
- Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
- Category
- System › Power Management › Video and Display Settings
Description
This policy setting allows you to specify the period of inactivity before Windows automatically reduces brightness of the display.
If you enable this policy setting, you must provide a value, in seconds, indicating how much idle time should elapse before Windows automatically reduces the brightness of the display.
Windows will only reduce the brightness of the primary display integrated into the computer.
If you disable or do not configure this policy setting, users control this setting.
Options
Registry
ComputerHKEY_LOCAL_MACHINE
HKLM\Software\Policies\Microsoft\Power\PowerSettings\17aaa29b-8b43-4b94-aafe-35f64daaf1ee View registry values
- DCSettingIndexREG_DWORD