Info: Night Light is a display feature on Windows 11 that will show warmer colors at night to reduce the strain on your eyes and help you get to sleep.  After going through dozens of user reports, we realized that there are several different causes of why you might expect to deal with this issue. Here’s a list of culprits that you should troubleshoot against if you’re dealing with this type of error: Now that we have gone over every potential reason why the Night Light feature on Windows 11 has stopped working let’s go over every confirmed fix that other affected users have to restore the normal functionality of this feature. 

1. Configure Night Light settings

Before you troubleshoot for a technical issue that is causing this behavior, you should start simply by verifying each Night Light setting that might cause this feature to work differently than it normally does.  It wouldn’t be the first time Microsoft released an update that resets or changes previously enforced Windows Settings, so the first thing you should do is access the Night Light Settings in the Windows Setting app and make sure that it’s correctly configured. Some Windows 11 users that we’re experiencing the same kind of issue have confirmed that they managed to get the issue resolved by adjusting the night light schedule & the night light intensity. Follow the steps below for specific instructions on doing so: If the Night Light feature remains disabled even though you reconfigured it, move down to the next method below.

2. Enable Location Services

Another reason you might notice that the night light functionality doesn’t kick into action is when the location services are disabled. Keep in mind that if you’ve previously set a custom schedule for Night Light, Windows needs to use the location services to keep track of your current time zone to enable or disable the night light feature automatically. Several Windows 11 users that were previously unable to re-enable the Night Light functionality have confirmed that the feature started working normally after the location services were enabled from the Privacy & Security tab. Follow the instructions below for specific steps on enabling Location services: If the Night Light feature is still not working as intended, move down to the next method below. 

3. Install pending Windows updates

One of the most typical instances of this error is when at least one outstanding infrastructure update is awaiting deployment. As it turns out, Microsoft has already begun deploying a hotfix that addresses the damage done by the bad update that ended up breaking the functionality of Night Light. Applying all pending Windows updates is the logical step in addressing this issue. Note: As of now, the hotfix has only been deployed for insider builds of Windows 11, but hotfixes for the retail versions are soon to follow.  To fix this problem, check that you’re using the most recent build of Windows 11 by going to the Windows Update component. Here’s how to make sure you install every pending update on Windows 11: 6. Restart your computer to see whether the issue has been fixed. Continue to the next procedure below if the issue is still not fixed even after you have installed every pending update available for your Windows system.

4. Sign out and back into your Windows account

Keep in mind that this particular issue can also be caused by a Windows 11 glitch that is a lot more frequent than it should be. Several users dealing with this problem have confirmed that, in their case, the night light feature on Windows 11 has started working normally after they signed out and back into their Windows account. You can do this directly from the Start menu by clicking on your Windows account and logging out of it temporarily. Here’s what you need to do: If you can still not use the night light feature even though it’s correctly configured, move down to the next method below. 

5. Create a new Windows account

Most GUI-based problems, such as the nightlight feature being off after being activated in Windows Settings, may be resolved by creating a new user account. If none of the previous methods indicated above have worked for you, the next thing you should attempt is to create a new user account using an elevated CMD window. Important: Please note that if you select this option, all settings and preferences specific to your current user account will be lost. If you’re prepared to make this decision and accept its consequences, follow the instructions below: Try the next method below if you cannot use the night light feature. 

6. Update your display driver

It turns out that if you’re running older GPU drivers, you might be able to avoid having to deal with this issue. Many Windows 11 users who have had this problem claim that installing the most recent graphics card driver and associated physics module for your dedicated GPU solved the problem. It has been verified to function with GPUs from AMD and NVIDIA. Making sure you’re installing the most recent AMD or Nvidia GPU driver version using the specific program is the easiest way to accomplish this (from AMD or Nvidia). Depending on whether you’re on the Nvidia or AMD side, pick one of the sub-guides below to ensure you’re running the latest recent GPU drivers:

6.1. Update Nvidia Display Driver

Nvidia suggests taking the time to properly remove each remaining driver file before downloading the most recent version if you have any reason to believe that your GPU driver fleet may be corrupt and unintentionally interfering with the night light function. We will ensure that the new GPU drivers install without a hitch by momentarily switching to the generic driver. The steps listed below should help you update to the latest recent Nvidia GPU for your particular model:

6.2. Update AMD Display Driver

Use the cleaning tool without a doubt before attempting to upgrade your existing driver if you have an AMD graphics card. You may be certain to remove all evidence of the prior driver installation and install it from scratch. After doing this, you may securely download the most recent GPU version using the Auto-Detect utility. Below is a list of every stage in the entire process: If you can still not enable the night light feature, move down to the next method below. 

7. Set the correct date & time

Your computer’s incorrect date and time settings might also cause issues with built-in Windows features like the Night light. Verify that your computer’s date and time settings are correct. Many users who have experienced this issue claim that you may also anticipate seeing this error code if the date and time that the location services expect differs from the actual date & time currently set on your OS. If this situation applies, changing the existing Date & Time settings in your Windows Settings should allow you to resolve the issue. If your date and time settings are not matching, the Night Light feature might remain disabled even though it’s enabled from the Windows Settings. If this situation applies to you, perform these steps to make sure your computer is set to the proper date and time:

Use a 3rd party app

If none of the methods featured in this article have allowed you to re-enable the Night Light functionality, there are also several different 3rd party alternatives that you can install and use to achieve the same functionality as the native Night Light feature.  Since there are a lot of tools out there that can do this, we’ve made your job easier by creating a curated list of 3rd party apps that will allow you to adjust the temperature of your screen and warm it up so that you can relax and wind down before sleep (just like Night Light). Here’s a short list of free 3rd party apps that you should consider:

F.Lux – As you unwind and prepare for bed at night, f.lux warms up your screen. Originally developed in 2008 to make screens appear more like books, f.lux now uses sleep and circadian biology to help you change how your body perceives day and night. This app is available on the Microsoft Store and is one of the few alternatives if you don’t want to step outside Microsoft’s UWP realm. Redshift – Redshift modifies color temperature by the sun’s location. Daytime and nighttime color temperatures are set differently. It’s an open-source app downloadable on Mac, Windows, Linux, and BSD. LightBulb – A tool called LightBulb helps people who work long hours on computers avoid getting eye strain. Gamma is continually adjusted throughout the day, changing the display’s color temperature from frigid blue during the day to warm yellow at night.SunsetScreen – A free Windows program, SunsetScreen helps reduce screen glare at night and is available for personal use only. According to scientific studies, the chemical melatonin, which the brain produces at the end of the day, is diminished by blue light. This blue light may be moderated to make it simpler to relax at night and have a better night’s sleep.RedshiftGUI – RedshiftGUI modifies the monitor’s color temperature to more closely reflect the environment you’re in. This implies that it establishes a warmer color temperature at night and a cooler color temperature during the day, owing to natural illumination (due to indoor lighting).

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