Fix Windows 10 Night Light Greyed Out

If you’re a night owl, don’t forget to enable Night Light on your Windows computer. This option emits a warmer yellowish light that helps you fall asleep faster after shutting your computer down. As a quick reminder, the standard blue light that most screens emit may suppress the body’s melatonin release. This means you’re more likely to have a hard time falling asleep.

Unfortunately, the Night Light option is sometimes greyed out in your Windows settings. If you already restarted your device, but the issue persists, follow the steps below to solve the problem.

What to Do if Night Light Is Greyed out on Windows?

Delete Blue Light Reduction in Registry Editor

There are two ways to enable Night Light on Windows. You can either click on the Action Center and select Night Light or toggle on the option under Settings → System → Display.

However, delete the blue light reduction entries from the Registry if these two options are not available.

1. Type regedit in the Windows Start search field.
2. Double-click on the Registry Editor to launch the app.
3. Then navigate to the following path:
   • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\CloudStore\Store\Cache\DefaultAccount
4. Delete these two entries:
   • default$windows.data.bluelightreduction.bluelightreductionstate
   • default$windows.data.bluelightreduction.settings
5. Then restart your computer, and check if Night Light is working.

Create a Night Light Script

Alternatively, you can also create a .reg script that you can run to automatically fix the issue.

1. Open a new Notepad file.
2. Then paste the following instructions into the blank file:
3. Windows Registry Editor Version 5.00
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\CloudStore\Store\Cache\DefaultAccount\$$windows.data.bluelightreduction.bluelightreductionstate] [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\CloudStore\Store\Cache\DefaultAccount\$$windows.data.bluelightreduction.bluelightreductionstate\Current] "Data"=hex:02,00,00,00,54,83,08,4a,03,ba,d2,01,00,00,00,00,43,42,01,00,10,00,\
d0,0a,02,c6,14,b8,8e,9d,d0,b4,c0,ae,e9,01,00
4. Save the file to your desktop and name it NightLightFix.reg
   • Note: You need to use the .reg extension to ensure the Registry Editor can recognize and run the script.
5. Double-click on the NightLightFix file to run the script. Check if you can enable the Night Light option.

Update Your Display Driver

Additionally, make sure to update your display driver to the latest version.

1. Launch the Device Manager.
2. Expand the list of Display Adapters.
3. Right-click on your graphics driver and select Update driver.
4. Restart your computer and check if the issue persists.

Conclusion

If the Night Light option is greyed out on your Windows computer, update your display driver to the latest version. Then launch the Registry Editor and delete the blue light reduction entries. Alternatively, you can also create a .reg script to automate the whole process. Did this guide help you fix the problem? Let us know which of the above solutions worked for you. Comment down below.