How to reset 'Night light' settings to fix grayed out problem on Windows 10

How to reset ‘Night light’ settings to fix grayed out problem on Windows 10

If you can't enable Night light on Windows 10 because the feature appears grayed out in the Settings app, try this workaround to fix the problem.

By Mauro Huculak (@Pureinfotech) , Windows How-To Expert and IT Specialist with 21 years of experience.

June 20, 2017

2022-05-12T20:02:15-04:00

On Windows 10, many users have been reporting that the Night light feature appears grayed out in the Settings app making it impossible to enable and configure, but there is a quick a fix for it.

Night light is a new feature that has been introduced on Windows 10 starting with the Creators Update to reduce eye strain. Similar to Night Shift from Apple and Android’s Night mode, Night light reduces the blue light emitted by the display to help your eyes not to get fatigued when working long hours at night and improve sleep quality.

In this guide, you’ll learn the steps to fix Night light on the Windows 10 Creators update or later, when the option appears grayed out in the Settings app.

How to fix Night light on Windows 10

Warning: It’s important to note that modifying the Registry can cause serious problems if not done properly. You should proceed only if you know what you’re doing, and if you have created a full backup of your system before proceeding.

Use the Windows Key + R keyboard shortcut open the Run command.
Type regedit and click OK to open the Registry.

Browse the following path:

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\CloudStore\Store\Cache\DefaultAccount

Inside the “DefaultAccount” (folder) key, right-click and delete the following two keys (folders):
```
$$windows.data.bluelightreduction.bluelightreductionstate
$$windows.data.bluelightreduction.settings
```
Reset Night settings on Windows 10
Restart your computer.

Once you completed the steps, the Night light settings will be reset, and the feature should start working again — just try to configure it one more time.

Usually, when you’re having problems with Night light, the issue is likely to be the video driver, as such another thing you can do is to reinstall or update your video driver to the latest version.

Is Night light working again on your device? Let us know in the comments below.