How to fix Night Light not working in Windows?

Question

Issue: How to fix Night Light not working in Windows?

I was advised to use Night Light by a friend since I often work late into the evening and when I tried to turn it on, it turned out it is not working correctly. Whenever I'm in settings, I enable it, and it works fine, but as soon as I leave it, my screen reverts back to normal. I would appreciate any help.

Solved Answer

The Night Light feature in Windows is a great tool for users to reduce eye strain, relieve headaches, and improve sleep quality. It works by adjusting the display of your computer monitor to match the natural lighting patterns of day and night.

During the day, it simulates daylight and boosts blue light, which keeps us alert, while during the night, it reduces blue light and increases the yellow-red spectrum, which helps us relax. Overall, the feature can be a valuable addition to your Windows experience, and your eyes will be thankful forever.

Once enabled, Night Light can be customized to your preferences. You can adjust the color temperature, brightness level, schedule, and transition time to best suit your needs.

Unfortunately, users have noticed that the app might malfunction, as there have been multiple reports of Night Light not working in Windows 10 and 11. Some users said they experience issues with app configuration, such as the brightness settings going back to normal, while others claimed that Night Light scheduling is not working, and the feature simply does not turn on at the set time.

This can be a result of multiple issues, including those related to video drivers. Thus, updating them or using generic drivers might solve the issue. In other cases, the problem may lie in their account bugs, so signing out and in might help.

More simple or complex solutions can also apply, and we discuss them all down below. If you would like a quicker resolution to various Windows problems, we recommend using ReimageMac Washing Machine X9 repair and maintenance utility that can be used to fix errors, BSODs, crashes, and other issues.

How to fix Night Light not working in Windows?

Fix 1. Update display driver

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Display drivers can be used for many functions in a Windows computer, including regulating the settings related to Night Light. Therefore, we recommend updating video drivers to see if that's the issue here.

You can either rely on an automatic driver updater such as DriverFix or visit the website of your device manufacturer. If you are using a dedicated graphics card, you are likely to have Nvidia or AMD GPU. For integrated GPUs, please visit the Intel support page.

Fix 2. Use the generic monitor driver

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  • Right-click on Start and pick Device Manager
  • Expand Monitors section
  • Right-click on Generic PnP Monitor and select Update driver
  • Pick Browse my computer for drivers

Open Device Manager

  • Select Let me pick from a list of available drivers on my computer
  • Select Generic PnP Monitor and click Next
  • Restart your computer.

Install Generic PnP monitor driver

Fix 3. Update Windows

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  • Type Updates in the Windows search box and press Enter
  • Click on Check for updates and wait till all the updates are automatically installed
  • If optional updates are available, install them too
  • Restart your device.

Update Windows

Fix 4. Sign out of your Microsoft account

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  • Press the Start button and then pick your account name
  • Then, click Sign out
  • After that log back into your account.

Sign out

Fix 5. Check date and time

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In some cases, the time settings might not be correct, hence Night Light would not turn on at the correct time.

  • Type in Control Panel in Windows search and press Enter
  • Go to Clock and Region and click on Date and Time
  • Pick the Internet Time tab and select Change Settings
  • Make sure that Synchronize with an Internet time server box is ticked
  • Click Update now and OK.

Synchronize clock

Fix 6. Reset Night Light settings via Registry Editor

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Before proceeding, make sure you back up your registry, as incorrect changes might cause serious Windows issues.

  • Type regedit in Windows search and hit Enter
  • When User Account Control shows up, click Yes
  • Once Registry Editor opens, navigate to the following location:
    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\CloudStore\Store\Cache\DefaultAccount
  • Delete the following keys:
    $$windows.data.bluelightreduction.bluelightreductionstate
    $$windows.data.bluelightreduction.settings
  • Close down Registry Editor.

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About the author
Ugnius Kiguolis
Ugnius Kiguolis - The problem solver

Ugnius Kiguolis is the founder and editor-in-chief of UGetFix. He is a professional security specialist and malware analyst who has been working in IT industry for over 20 years.

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