How To Fix Night Light Not Working On Windows?

To fix the Night Light not working issue on Windows, follow these steps based on the information gathered from the search results:

1. Update Display Drivers: Ensure your display driver is updated. Go to Settings > System > Display > Night light, and if the Night Light toggle is grayed out, visit Device Manager to update the driver or use a tool like Driver Easy mentioned in.

2. Sign Out & Sign Back In: A simple sign-out and sign-back-in process might resolve temporary glitches.

3. Reset Night Light Settings Manually: Use the Registry Editor to reset Night Light settings:

   • Press Win + R, type regedit and hit Enter.
   • Navigate to Computer\HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\CloudStore\Store\DefaultAccount\Cloud and delete the default$windows.data.bluelightreduction.* entries.
   • Close Registry Editor and restart your PC.

4. Check Date & Time Settings: Accurate date and time settings are crucial for scheduling Night Light. Right-click the clock on the taskbar, choose 'Adjust date/time', and ensure the settings are accurate.

5. Enable Location Services: If you want to schedule Night Light from sunset to sunrise, enable Location Services:

   • Press Win + I to open Settings, then select 'Privacy'.
   • Choose 'Location' and ensure 'Location for this device' and 'Allow apps to access your location' are both On.

6. Install Windows Updates: Windows updates often include bug fixes and new features. Check for updates by typing 'Check for updates' in the search field and install any available updates.

7. Check for Multiple Displays: If you're using multiple displays, ensure the Night Light settings apply to all displays.

8. Troubleshoot with Third-Party Apps: If the issue persists, consider using third-party apps like f.lux as an alternative.

If none of these solutions work, consider contacting Microsoft Support or seeking help from official Windows forums.