Policy

Reduce display brightness (plugged in)

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.

Policy
Pack Microsoft Windows
Category System / Power Management / Video and Display Settings
Policy ID 4e0d68b443cd
Internal name DisplayDimTimeOutAC

Registry

Copy registry mappings

HKLM\Software\Policies\Microsoft\Power\PowerSettings\17aaa29b-8b43-4b94-aafe-35f64daaf1ee\ACSettingIndex

Policy notes

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.

Related policies

Reduce display brightness (on battery)Specify the display dim brightness (on battery)Specify the display dim brightness (plugged in)Turn off adaptive display timeout (on battery)Turn off adaptive display timeout (plugged in)Turn off the display (on battery)Turn off the display (plugged in)