Windows Night Light是一项很棒的功能，可以帮助消费者更长时间地使用他们的计算机。它使屏幕颜色更温暖，这在您在黑暗或夜间工作时特别有用。也就是说，如果由于某种原因您看到夜灯不^(Light)工作、无法打开/关闭或灰显，那么您可以通过以下方法解决此问题。

夜灯在^{(Night Light)}Windows 11/10中不起作用 

如果您的 Windows 11/10 夜灯一直处于On/Off状态，或者无法打开或无法关闭^(Off)，请尝试我们的以下建议。有些东西肯定会帮助你：

1. 关闭^(Turn)然后打开夜灯^{(Night Light)}
2. ^{(Update Graphics)}如下所述更新图形驱动程序
3. 检查位置和时钟设置
4. 重启电脑看看
5. ^{(Reset Night Light)}如果设置显示为灰色，则通过注册表^(Registry)重置夜灯，如下所述。

1] 关闭^(Turn)然后打开夜灯^{(Night Light)}

首先，您应该关闭然后通过设置打开夜灯，看看是否有帮助。

2]更新图形驱动程序

由于这是一项依赖于图形的功能，因此最好在计算机上安装最新版本的图形卡。您可以从 OEM 网站下载最新的驱动程序，也可以使用^{(download the latest driver from the OEM website)}OEM的图形实用程序来更新您的图形驱动程序^{(update your graphics driver)}。

3]夜灯^{(Night Light)}没有在预定时间打开？检查位置^{(Check Location)}和时钟设置^{(Clock Settings)}

自动灯光设置^{(Light Settings)}取决于两件事 -位置^(Location)和时钟设置^{(Clock Settings)}。当您在另一个地区工作时，通常会发生这种情况。

更改时间设置：^{(Change Time Settings:)}

• 转到Settings > Time和Language > Date和时间^(Time)
• 将日期和时间切换为自动。如果它已经打开，请将其关闭并将其设置为您的时区。

设置位置：^{(Set Location:)}

• 转到设置>隐私设置>打开位置^(Location)
• 重启你的电脑。

这将确保夜灯^{(Night Light)}在预定时间打开/关闭。

4]夜灯模式^{(Night Light Mode)}没有改变？重启^(Restart)电脑看看

这种情况很少见，但如果夜灯^{(Night Light)}模式卡在开启或关闭^(Off)状态，您可以执行以下操作。

• 按^(Press)Windows键启动开始菜单^{(Start Menu)}。
• 单击^(Click)您的个人资料图片并选择退出^(Sign-out)。
• 重新启动并重新登录。

这将修复任何卡在您的帐户中的设置。

5]夜灯切换变灰^{(Night Light Toggle Grayed)}？通过注册表^(Registry)重置夜灯^{(Night Light)}

通过在运行^(Run)提示中键入“regedit”打开注册表编辑器^{(Registry Editor)}并导航到以下键：

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

展开DefaultAccount注册表文件夹，然后删除两个子文件夹：

$$windows.data.bluelightreduction.bluelightreductionstate

$$windows.data.bluelightreduction.settings

关闭 Regedit^{(Close Regedit)}，然后退出。重启你的电脑。

以防万一，没有什么对你有用；最好切换到F.LUX 等替代品。^(F.LUX.)  它也可以作为Windows 应用程序^{(Windows App)}提供，您可以从商店^(Store)下载。由于它不依赖于任何Windows Settings，因此它应该对您很好。

Night Light not working or wont turn On or Off in Windows 11/10

Windows Night Light is a great feature that helps сonsumers to use their computers for a longer duration. It makes the screen color warmer, whіch is espеcially helpful when you work in the dark or at night. That said, if for some reason you see Night Light іs not working, wоn’t turn on/off, or is grayed out, then here is how you can fix this problem.

Night Light not working in Windows 11/10

If your Windows 11/10 night light stuck on On/Off, or not turning On or if it won’t turn Off, then try our following suggestions. Something is sure to help you:

1. Turn off and then turn on Night Light
2. Update Graphics driver as explained below
3. Check Location and Clock Settings
4. Restart PC and see
5. Reset Night Light via Registry as explained below if the setting is grayed out.

1] Turn off and then turn on Night Light

First, you should Turn off and then turn on Night Light via Settings and see if that helps.

2] Update Graphics driver

Since this is a graphics-dependent feature, it’s is best to install the latest version of the graphics card you have on your computer. You can either download the latest driver from the OEM website or use the graphics utilities of the OEM to update your graphics driver.

3] Night Light not turning on at the scheduled time? Check Location and Clock Settings

Automatic Light Settings depend on two things – Location and Clock Settings. This usually happens when you stay in one region while you work for another region.

Change Time Settings:

• Go to Settings > Time & Language > Date & Time
• Toggle to automatic for both date and time. In case its already turned on, turn it off and set it to your time zone.

Set Location:

• Go to Settings > Privacy Settings > Turn on Location
• Restart your computer.

This will make sure Night Light turns on / off at its scheduled time.

4] Night Light Mode doesn’t change? Restart PC and see

This is rare, but in case the Night Light mode is stuck in either On or Off state, here is what you can do.

• Press the Windows key to launch the Start Menu.
• Click on your profile picture and select Sign-out.
• Restart and sign-in again.

This will fix any setting which gets stuck with your account.

5] Night Light Toggle Grayed out? Reset Night Light via Registry

Open Registry Editor by typing “regedit” in the Run prompt and navigate to the following key:

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

Expand the DefaultAccount registry folder, and then delete the two sub-folders:

$$windows.data.bluelightreduction.bluelightreductionstate

$$windows.data.bluelightreduction.settings

Close Regedit, and exit. Restart your computer.

In case, nothing works for you; it is best to switch to alternatives like F.LUX.  It is also available as Windows App which you can download from the Store. Since it doesn’t depend on any of the Windows Settings, it should work just fine for you.

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