How to Fix Night Light Stuck On, Won't Turn Off, or Not Working on Windows
Night Light stuck on all day, won't toggle off, or not activating at sunset? Fix Night Light scheduling and color temperature issues on Windows 10 and 11.
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Main Troubleshooting Guide
How to Fix Black Screen on Startup →Complete symptoms, causes, and step-by-step solutions
Symptoms
You might be experiencing this problem if you notice:
- •Night Light stuck on — screen has an orange/warm tint all day
- •Night Light toggle is greyed out in Quick Settings
- •Night Light won't turn on at scheduled sunset time
- •Screen flashes when Night Light toggles on or off
- •Night Light resets to wrong schedule after restart
- •Night Light intensity slider does nothing
- •"Schedule Night Light" toggle keeps turning itself off
Common Causes
- ⚠Location services disabled — sunset/sunrise schedule can't determine your location
- ⚠Windows Display Driver Model (WDDM) too old to support Night Light
- ⚠GPU driver not compatible with Night Light color temperature adjustments
- ⚠Third-party color management software (f.lux, Redshift) conflicting
- ⚠Registry values for Night Light corrupted
- ⚠Group Policy disabling Night Light feature
- ⚠Date/time or timezone set incorrectly — sunset/sunrise times wrong
Solutions
Solution 1: Fix Night Light Stuck On
- 1Settings → System → Display → Night light → toggle OFF
- 2If the toggle doesn't respond: try Quick Settings (Win+A) → Night Light button
- 3If still stuck: Settings → System → Display → Night light → set "Strength" slider to 0
- 4Nuclear fix: delete Night Light registry data:
- 5Open Registry Editor → HKCU\Software\Microsoft\Windows\CurrentVersion\CloudStore\Store\DefaultAccount\Current
- 6Delete the two keys containing "NightLight" in their name
- 7Restart the PC — Night Light settings will be reset to defaults
Solution 2: Fix Sunset/Sunrise Schedule
- 1Night Light "Sunset to sunrise" requires location services:
- 2Settings → Privacy & security → Location → enable "Location services"
- 3Also enable "Let apps access your location"
- 4Check date/time: Settings → Time & language → Date & time
- 5Enable "Set time automatically" and "Set time zone automatically"
- 6If timezone is wrong: Night Light calculates sunset/sunrise incorrectly
- 7Alternative: use "Set hours" instead of "Sunset to sunrise" for manual schedule
Solution 3: Fix Greyed-Out Night Light
- 1Night Light requires WDDM 2.0 or newer display driver:
- 2Check: Win+R → dxdiag → Display tab → look at "Driver Model" — must be WDDM 2.0+
- 3If older: update your GPU driver from manufacturer's website
- 4Some older GPUs (pre-2015) don't support WDDM 2.0 — Night Light won't work
- 5Remote Desktop sessions don't support Night Light — it will be greyed out
- 6If using a basic display adapter (no GPU driver installed): install the proper GPU driver
- 7After driver update: restart and check Night Light availability
Solution 4: Remove Conflicting Software
- 1Third-party color temperature tools conflict with Night Light:
- 2Uninstall f.lux if installed (Settings → Apps → search "f.lux" → Uninstall)
- 3Also check for: Redshift, Iris, SunsetScreen, or similar tools
- 4These apps modify the same color temperature that Night Light controls
- 5Running both causes: flickering, stuck colors, or one overriding the other
- 6Choose ONE: either Night Light OR a third-party tool, not both
- 7After uninstalling: restart and test Night Light
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