The official Microsoft instructions for night light says that the most common issue with the feature not working is outdated or incompatible drivers. There are a few common issues with the night light functionality like the buttons being grayed out or disabled, but we also listed a few workarounds and fixes for such issues below.
Alternatively go to Settings from the start menu and click on System > Display to see the night light toggle button. The easiest way to enable night light on Windows 10 is to just type ‘ Night light‘ in your start menu search bar. The night light feature was added to Windows 10 and it’s still a quite rarely used feature, as a lot of users don’t realize it was introduced in the latest versions of Windows. The night light is a feature more commonly seen on mobile devices as a method to reduce strain on the eyes. Best Third Party Software for a Night Light
Fix the Night Light Entries from Windows Registry Fixing Grayed Out or Disabled Night Light Options
