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Night Light Option Disabled or Greyed Out in Windows 10? Here how to fix

Similar to Night Shift from Apple and Android’s Night mode Windows 10 also have a Night light feature enabling this 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. Enabling this Feature make the screen color gamma more comfortable for your eyes at night by reducing blue light. And users can enable Night light from settings, System > Display. And toggle on the Night light button. But some of users report Night Light Options Are Grayed Out or can’t turn on Night light in Windows 10. If you are also having a similar issue here how to fix if night light greyed out windows 10.

Night light Greyed out windows 10

This issue with windows 10 Night Light feature mostly stems from a couple of broken registry keys. And removing these keys forces the operating system to recreate them fix the problem for you.

  1. Press Windows + R, type regedit and ok,
  2. This will open the Windows registry editor window.
  3. First Backup the registry database and navigate the following key.
  4. HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\CloudStore\Store\Cache\DefaultAccount
  5. Expand the DefaultAccount registry folder, and then delete the sub-folder labeled
  • $$windows.data.bluelightreduction.bluelightreductionstate.
  • $$windows.data.bluelightreduction.settings

Night light Greyed out registry tweak

Exit the Registry Editor and restart your PC.

Enable Windows 10 night light

Now after tweak windows registry follow steps below to Enable Windows 10 Night light feature.

  1. Open Settings Using keyboard shortcut Windows + I
  2.  Now Click on System then Display
  3. Here toggle on the button under the Night light

Turn on Windows 10 Night light

  • To configure click on Night light settings
  • Here from Night Light Settings window, Drag the slide to  manually adjust the color temperature
  • From here also you can schedule night light by toggle on the button under schedule.
  • You can either select Sunset to Sunrise, which will automatically update each day based on your location, or set a manual start and stop time.

windows 10 night light settings

Update Display Driver

If after tweak windows registry editor, still night light option disabled or greyed out windows 10? We recommend updating your display driver following steps below.

  • Press Windows + X keyboard short and select device manager,
  • Expend display driver,
  • Right click on installed graphics driver and select update driver.
  • Select the option “Search automatically for updated driver software”
  • This will check for and install the latest driver software if available.
  • Also, you can visit the device manufacturer website to download and install the latest display driver.
  • Restart Windows and try to enable night light.

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