Night Light in Windows 11 stops working most often due to display setting conflicts, outdated graphics drivers, or system glitches. To fix it quickly, start by toggling Night Light off and on, then update your graphics driver and check your display color profile. These steps usually restore the feature without extra effort.
Why isn’t Night Light turning on on my Windows 11 PC?
When Night Light doesn’t activate, you might see the toggle greyed out or notice no change in screen color. Sometimes it turns on but the screen doesn’t warm, or it disables itself after a reboot. These signs usually mean Windows can’t adjust the screen colors because of hardware conflicts, corrupted settings, or issues from recent system updates.
Could my display or graphics driver be causing Night Light problems?
Night Light depends on your graphics driver to modify screen colors. If the driver is outdated, incompatible, or corrupted, Night Light might not work or fail to turn on. To check, right-click the Start button, open Device Manager, and expand Display adapters. Right-click your graphics device and select "Update driver" to search automatically. If no update appears, visit your GPU manufacturer’s website for the latest driver. Also, third-party display management tools or custom drivers can interfere with Night Light, so disable or uninstall them if problems continue.
How do I fix Night Light not working in Windows 11?
- Open Settings > System > Display.
- Toggle Night Light off, wait a few seconds, then toggle it back on.
- Restart your PC to clear temporary issues.
- Check your display’s color profile: go to Settings > System > Display > Advanced display, then select Color profile. Set it to the default or a compatible profile.
- Install any pending Windows updates under Settings > Windows Update, since updates can fix Night Light bugs.
- Restart the Windows Color System Service if toggling doesn’t help:
Stop-Service -Name "LCDMonitor"
Start-Service -Name "LCDMonitor"- If you use multiple monitors, disable Night Light on secondary screens since some don’t support it properly.
- If Night Light still won’t work, try creating a new user profile to rule out corrupted user settings.
How can I confirm Night Light is working correctly after troubleshooting?
After applying fixes, turn Night Light on manually from Settings > System > Display and look for the orange tint on your screen. Set a schedule for Night Light and verify the screen color changes at the set times. Restart your PC and confirm Night Light settings remain active and functional after reboot, which shows the issue is resolved.
Are there known Windows 11 bugs or updates that affect Night Light?
Some Windows 11 updates, especially major version upgrades, have caused Night Light to stop working or made the toggle greyed out. If you think a recent update caused this, uninstall it via Settings > Windows Update > Update history > Uninstall updates. Watch Microsoft’s update notes or forums for fixes. Sometimes the only option is to wait for a patch that resolves the problem.
What can I do to avoid Night Light issues going forward?
Keep your graphics drivers and Windows updated to reduce compatibility problems. Avoid third-party apps that change display colors, as they can conflict with Night Light. Use default or manufacturer-recommended color profiles and avoid manual adjustments that interfere with Windows color management. If you use multiple monitors often, confirm all support Night Light or limit Night Light to your main display to reduce conflicts.
Before You Start
This guide applies to Windows 11 on PCs with standard user privileges; some steps require Administrator rights. No data backup is needed for these troubleshooting steps, but a restart is required. First, confirm your PC is running Windows 11 and that Night Light is enabled in Settings > System > Display. Also, check that your device isn’t in "Battery saver" or "Power saving" mode, which can disable Night Light.
Conclusion
If Night Light stops working, start by toggling it off and on, then update your graphics driver and check your display’s color profile. Installing Windows updates and restarting relevant services can also help. Keep your system and drivers up to date and avoid software that alters display colors to prevent future issues. If problems continue, check for known bugs or contact support for advanced help.
Frequently Asked Questions
Why is the Night Light toggle greyed out on my Windows 11?
This usually happens because Windows can’t control your display’s color settings, often due to outdated or incompatible graphics drivers or conflicts with other display software.
Does Night Light work on all monitors?
Not always. Some external monitors or certain display adapters don’t support Night Light, which can cause it not to activate or make the toggle appear greyed out on those screens.