The Night Light feature on Windows 10 and 11 is designed to reduce eye strain and improve sleep quality by reducing blue light emission from your computer’s display. However, sometimes the Night Light may stop working, preventing you from enjoying its benefits. In this comprehensive guide, we will provide you with quick solutions to fix the Windows Night Light not working issue on your Windows computer. By following these troubleshooting steps, you can resolve the problem and unlock seamless late-night computing with the Night Light feature.

Key Takeaways:

  • Check the Night Light’s strength and adjust it accordingly to ensure it’s not set too low.
  • Update your graphics card drivers to ensure compatibility with the Night Light feature.
  • If updating the drivers doesn’t work, try reinstalling them to fix any potential issues.
  • Reset the Night Light settings through the Registry Editor if other troubleshooting steps fail.
  • Verify the date and time settings on your PC and synchronize them if necessary.

Check the Night Light’s Strength

The first step in troubleshooting the Night Light not working issue is to check the strength of the Night Light. Windows allows you to customize the strength of the Night Light effect. To do this, open the Settings panel by pressing Win + I and click on Display. Under the Brightness & color section, click on Night light. Make sure the Night Light is turned on. Then, adjust the Strength slider to set the warm color tone according to your preference. If the Night Light is set to a very low strength, it may be difficult to notice when it turns on. Adjusting the strength to the right level can help resolve the issue and make the Night Light start working again.

Customizing the Night Light strength allows you to find the perfect balance between reducing blue light emission and maintaining a visually comfortable display. By adjusting the strength, you can ensure that the Night Light remains effective without compromising the overall viewing experience.

Consider experimenting with different strength levels to find what works best for you. Some individuals may prefer a stronger warm color tone for maximum eye comfort, while others may find a lighter warm color more suitable. Finding the right balance can help alleviate eye strain and promote better sleep quality, especially during late-night computer use.

Table: Night Light Strength Comparison

Strength LevelEffect
LowThe Night Light effect is subtle and may be difficult to notice.
MediumThe Night Light effect is noticeable, providing a balanced warm color tone.
HighThe Night Light effect is prominent, significantly reducing blue light emission.

Remember to periodically check and adjust the Night Light strength as your lighting conditions or personal preferences change. By fine-tuning the strength, you can optimize the Night Light feature and enjoy its benefits for a comfortable and eye-friendly computing experience.

Update Graphics Card Drivers

If you’re experiencing the Night Light not working issue on your Windows computer, it’s important to check if your graphics card drivers are up to date. Outdated or missing graphics card drivers can often cause display-related features to malfunction, including Night Light. Updating your graphics card drivers can resolve compatibility issues and ensure the proper functioning of the Night Light feature.

To update your graphics card drivers, follow these steps:

  1. Open the WinX Menu by pressing Win + X on your keyboard.
  2. Select Device Manager from the list of options.
  3. In the Device Manager window, expand the Display adapters section.
  4. Right-click on your graphics card device and select Update.
  5. In the Update window, choose the option to search automatically for updated driver software.
  6. Windows will then download and install any pending driver updates for your display device.
  7. After the installation completes, restart your PC.

Once your PC has restarted, check if the Night Light feature starts working as expected. Updating your graphics card drivers can often resolve common problems with Night Light and ensure a seamless experience of reduced blue light emissions.

If you have already updated your graphics card drivers but are still experiencing the Night Light not working issue, you can try the next troubleshooting step mentioned in the following section.

Reinstall the Graphics Driver

If you have already updated your graphics card drivers but the Night Light feature is still not working, you can try reinstalling the graphics driver to fix any potential issues. Reinstalling the graphics driver can help resolve common problems with the driver and potentially restore the functionality of the Night Light feature.

To reinstall the graphics driver, follow these steps:

  1. Open the Device Manager by pressing Win + X and selecting Device Manager from the menu.
  2. Expand the Display adapters section to view your graphics card device.
  3. Right-click on the display device driver and select Uninstall device.
  4. In the confirmation window, click on Uninstall to remove the driver. Make sure to leave the option to delete the driver software for this device unchecked.
  5. After the uninstallation is complete, restart your PC. Windows will automatically reinstall the missing drivers for your graphics device.

Once the driver has been reinstalled, check if the Night Light feature starts working again. Reinstalling the graphics driver can often resolve issues related to driver compatibility or corruption that may be causing the Night Light to malfunction.

ProblemSolution
Night Light not workingReinstall the graphics driver

By following these steps, you can troubleshoot and fix the Night Light not working issue on your Windows computer. Reinstalling the graphics driver is a common solution that can resolve driver-related problems and restore the functionality of the Night Light feature. If the issue persists, you can try other troubleshooting methods mentioned in this guide.

Reset Night Light Settings via Registry Editor

If none of the previous fixes resolve the Night Light not working issue, you can try manually resetting the Night Light settings through the Registry Editor. This method is particularly useful if the Night Light option is greyed out in the Settings.

To reset Night Light settings, open the Run dialog by pressing Win + R, type regedit, and click OK. In the Registry Editor, navigate to the following location: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\CloudStore\Store\DefaultAccount\Cloud. Under the Cloud key, locate and delete the following keys: default$windows.data.bluelightreduction.settings and default$windows.data.bluelightreduction.bluelightreductionstate.

Once you’ve deleted both keys, close the Registry Editor and restart your PC. After the restart, set up the Night Light feature again, and it should start working as expected.

Resetting the Night Light settings via the Registry Editor can help resolve any underlying issues that may be causing the Night Light not working problem. However, it’s important to exercise caution when making changes to the Registry, as incorrect modifications can lead to system instability. Make sure to follow the steps carefully and only delete the specified keys to avoid any unintended consequences.

Why Manually Reset Night Light Settings?

  1. The Night Light option is greyed out in the Settings.
  2. The Night Light feature remains non-functional despite trying other troubleshooting steps.
  3. You want to ensure a clean reset of the Night Light settings to fix any potential conflicts or corrupted data.

By manually resetting the Night Light settings through the Registry Editor, you can overcome any technical barriers that may be preventing the Night Light feature from working correctly. This method gives you a fresh start with the Night Light functionality, allowing you to enjoy its benefits without any interruptions.

Check Date and Time Settings

If your Windows Night Light feature is not working properly, one possible cause could be incorrect date and time settings on your system. It’s important to ensure that your date and time are set correctly in order for the Night Light to operate as intended. Here’s how you can check and correct your date and time settings:

  1. Open the Settings panel by pressing Win + I.
  2. Click on Time & Language.
  3. Click on Date & time.
  4. Make sure the options for Set time automatically and Set time zone automatically are enabled.
  5. If the date and time are incorrect, you can make the necessary changes manually and click on Change.
  6. Once you’ve set the correct date and time, re-enable the options for automatic time and time zone settings.

By synchronizing your clock and ensuring the date and time settings are accurate, you can help resolve any issues with the Night Light feature not starting or turning off at incorrect times.

Please note that if your computer is connected to the internet, enabling the “Set time automatically” option will allow your system to synchronize the time with online time servers, ensuring the utmost accuracy in your date and time settings.

Turn On Location Service

To ensure the proper functioning of the Night Light feature and enable its scheduled activation, you need to turn on the location service on your system. By enabling the location service, you allow Windows to accurately determine the time of sunset and sunrise based on your geographical location, thus ensuring that the Night Light turns on and off at the appropriate times.

To turn on the location service, follow these steps:

  1. Open the Settings panel by pressing Win + I.
  2. Click on “Privacy & Security”.
  3. In the right pane, scroll down to the “App permissions” section and click on “Location”.
  4. Toggle the switch for “Location services” to the On position.

Once you have turned on the location service, the Night Light feature should start working according to your desired schedule.

Enable Night Light Manually

If you prefer to enable the Night Light feature manually instead of relying on the location service, you can still leave the location service turned off. To manually enable Night Light, follow these steps:

  1. Click on the Action Center icon in the taskbar or press Win + A to open the Action Center.
  2. Click on the “Night Light” tile to enable it.

This way, you have full control over when to turn on and off the Night Light feature, regardless of whether the location service is enabled or disabled.

Location ServiceScheduled Activation
Turned OnAutomatically follows sunset and sunrise times based on your geographical location.
Turned OffManually control the Night Light feature by enabling or disabling it through the Action Center.

With the location service turned on or manually enabling Night Light, you can enjoy the benefits of reduced blue light emissions during the desired hours, which can help improve your sleep quality and reduce eye strain.

Check for Windows Updates

If you’re experiencing issues with the Night Light feature on your Windows computer, one of the potential solutions is to check for and install any available Windows updates. Windows updates often include bug fixes and performance improvements that can help resolve problems with features like Night Light.

To check for updates, open the Settings panel by pressing Win + I and click on Windows Update. Then, click on the “Check for updates” button to see if any updates are available for your system. If there are updates, download and install them, and then restart your computer.

After installing the updates, check if the Night Light feature starts working as expected. Sometimes, a bug in the Windows operating system can cause Night Light to malfunction, and updating Windows can help rectify this issue.

If the Night Light is still not working after updating Windows, you can explore other troubleshooting methods mentioned in this guide to fix the problem and enjoy the benefits of reduced blue light emission from your display.

Use Third-Party Night Light Alternatives

If you have exhausted all the troubleshooting steps and the built-in Night Light feature is still not working on your Windows computer, don’t worry. There are third-party alternatives available that can provide a similar experience and help reduce blue light emissions from your screen.

One popular option is f.lux, a highly customizable app that allows you to adjust the color temperature of your screen according to the time of day. It automatically adapts to your location and provides a warmer tone during the evening and nighttime hours, reducing eye strain and promoting better sleep.

Another alternative worth considering is SunsetScreen. This app offers similar functionality and customizability, allowing you to personalize the color settings to suit your preferences. It also includes additional features like the ability to schedule screen changes and adjust the brightness levels.

By exploring these third-party alternatives, you can still enjoy the benefits of reducing blue light emissions on your computer, even if the built-in Night Light feature is not functioning properly. These applications offer a range of customization options and flexibility to adapt to different times of the day, ensuring a comfortable viewing experience for your late-night computing sessions.