Fix Night Light / Blue Light Filter Not Working

Last updated: August 27, 2025

Fix Night Light toggle greyed out, not activating at sunset, or not warming the screen. Covers GPU driver updates, location services, HDR conflicts, and registry reset.

Overview

Night Light greyed out or not working? This guide covers 5 methods including driver fixes, location settings, HDR compatibility, and complete configuration reset.

What this helps with

What to expect: Easy difficulty • usually about 5-10 minutes.

This is one of 67 Software Issues fixes in the WindowsHelper library. The full step-by-step fix lives in the WindowsHelper app.

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