今天我们就来聊一聊Windows 10中最基本也是最常用的功能。在设备上投射显示是我们使用最多的功能之一。但是，随着功能的增加，错误和错误的数量也在增加。但是，如果您发现此Cast to Device功能在^{(Cast to Device)}Windows 10中不起作用，那么这篇文章将帮助您解决问题。

用户经常使用投射功能从他们的小屏幕设备观看电影和节目到更大的设备。我知道电脑确实有更大的屏幕，但对于一家人坐在一起来说没有那么大。连接 HDMI、VGA 和使用USB 闪存驱动器^{(USB Flash Drives)}。只需^(Just)将您的Windows 10系统投射到任何智能^(Smart)电视或投影仪上，您就可以开始使用了。

投射到设备在^(Device)Windows 10中不起作用

您的系统无法投射任何内容可能有多种原因。这些原因可能包括网络连接性低、设备不可发现、显示设备上的固件错误等。但是，我们假设投射设备一切正常，但 Windows 10 设备不正常。如果你是这种情况，你可以试试下面提到的方法：

1. 打开网络发现
2. 更新网络驱动程序
3. 检查流媒体选项
4. ^{(Change Cast)}在Windows Defender 防火墙中^{(Windows Defender Firewall)}更改投射到设备^(Device)设置
5. 检查 Microsoft LLDP 协议驱动程序设置^{(Check Microsoft LLDP Protocol Driver Setting)}
6. 运行硬件疑难解答。

您可以在互联网上找到更多方法。但是今天我们将介绍最基本和最有效的方法。

1]打开网络发现

如果你是一个极客，那么你可能知道网络是如何工作的。默认情况下，Windows 10 将所有网络保持为私有。但是要投射一些东西，您需要打开网络发现，以便设备可见。

1. 按Win + R键，将打开运行窗口。^(Run)
2. 键入控制^(control)并按 Enter。控制^(Control) 面板^(Panel)将打开。

   

3. 在控制面板中查找网络和共享中心^{(Network and Sharing Center)}并单击它。
4. 在左侧面板上单击更改高级共享设置^{(Change advanced sharing settings)}。

   

5. 在高级共享^{(Advanced Sharing)}设置窗口中，放大访客或公共选项^{(Guest or Public options)}。网络内发现，单击打开网络发现^{(Turn on network discovery)}。
6. 对文件和打印机共享^{(File and printer sharing)}执行步骤 5，然后单击Save Changes。

   

7. 现在您可以再次尝试投射^(Cast)到设备^(Device)。

如果错误仍然存​​在，您可以转到下一个方法。

2]更新网络驱动程序

我们经常看到由于驱动程序过时或损坏而发生错误。更新驱动程序^{(updating drivers)}有多种方式，从下载驱动程序^{(downloading drivers)}到手动更新。今天我们将了解如何手动更新驱动程序。

1. 按Win + X键。快速^(Quick) 访问^(Access)菜单将打开。
2. 点击设备^(Device) 管理器^(Manager)。

   

3. 在设备^(Device) 管理器^(Manager)窗口中，查找网络^(Network) 适配器^(adapters)并单击它。
4. 查找无线适配器（如果您正在无线连接），右键单击它并单击更新^(Update) 驱动程序^(driver)。

   

5. 在更新窗口中，单击自动^{(automatically)}搜索^(Search) 更新^(updated)的^(for)驱动程序^(driver)软件^(software)。

   

如果更新可用，那么它将自动安装它们。该过程结束后，请尝试再次投射您的设备。请^(Please)确保您的系统设置为自动安装更新。如果不是，则此方法将引发错误。

3]检查流媒体选项

很多时候我们想做某事却做不到是因为没有提供足够的权限。但为了更安全，请确保您的系统中安装了最新的驱动程序。

1. 按Win + R键，将打开运行窗口。^(Run)
2. 键入控制^(control)并按回车键。控制^(Control) 面板^(Panel)将打开。

   

3. 在控制^(Control) 面板^(Panel)中查找网络^(Network) 和^(and) 共享^(Sharing) 中心^(Center)并单击它。
4. 在左侧面板上，单击媒体^(Media) 流^(streaming) 选项^(options)。

   

5. 如果媒体流被禁用，那么您需要将其打开。单击^(Click)打开媒体流^{(Turn on media streaming)}。

   

6. 确保^(Make)您的设备在本地网络上可见。允许在设备上共享媒体，然后单击OK。

   

一旦进行了这些更改以重新启动系统一次，您就可以开始了。

4]在Windows Defender 防火墙中^{(Windows Defender Firewall)}更改投射^{(Change Cast)}到设备^(Device)设置

有时连接因防御防火墙而中断。您出于安全目的使用的防火墙可能会在两者之间中断。

1. 按Win + R键。运行^(Run)窗口将打开。
2. 键入控制^(control)并按回车键。

   

3. 在控制面板中，查找Windows Defender 防火墙^{(Windows Defender Firewall)}并单击它。
4. 在左侧面板上，单击允许应用程序或功能通过 Windows Defender 防火墙^{(Allow an app or feature through Windows Defender Firewall)}。

   

5. 在允许的应用和功能^{(Allowed apps and features)}列表中搜索投射到设备功能^{(Cast to Device functionality)}。
6. 确保Private和Public，这两个复选框都被选中。如果没有，请单击更改设置^{( Change settings)}，然后选中两个复选框。
7. 单击确定^(OK)，您就可以开始了。

   

此方法可确保在Private和Public网络中启用^(networks)Cast to Device功能。简而言之，如果启用了防火墙，这是检查任何权限问题的最佳方法。

5]检查Microsoft LLDP协议驱动程序设置^{(Check Microsoft LLDP Protocol Driver Setting)}

现在，您的最后手段是检查网络适配器设置。如果您的网络适配器驱动程序已更新并且防火墙允许您投射设备，那么现在是检查适配器设置的时候了。有时，由于系统上有多个适配器选项，设置可能会发生变化。其背后的基本原因是使用Wi-Fi和以太网^(Ethernet)来连接网络。

1. 按Win + R键，将打开运行窗口。^(Run)
2. 键入控制^(control)并按回车键。控制面板^{(Control Panel)}将打开。

   

3. 在控制面板中查找网络和共享中心^{(Network and Sharing Center)}并单击它。
4. 在左侧面板上单击更改适配器设置^{(Change adapter settings)}。

   

5. 现在右键单击您连接的适配器，然后单击Properties。

   

6. 在您的连接使用的项目列表中，检查是否选中了Microsoft LLDP 协议驱动程序^{(Microsoft LLDP Protocol Driver)}。如果没有，请单击复选框并单击OK。

   

完成这些设置后重新启动系统。它肯定会解决你的问题。如果任何方法都无法解决您的问题，请确保恢复对网络^(Network)和共享^(Sharing)选项所做的更改。

6]运行硬件疑难解答

运行硬件疑难解答，看看它是否对您有帮助。

在下面的评论中让我们知道哪种方法适合您。

PS：将媒体投射到设备在 Edge 上不起作用^{(Cast Media to device is not working on Edge)}？启用此标志！

Cast to Device not working in Windows 10

Today we are going to talk about the moѕt basic and most used fеatυre in Windows 10. Caѕting display on devices is one of the features we use the most. But, with growіng features, errors and bugѕ also increase in their count. But if you find that this Cast to Device feature is not working in Windows 10, then this post will help you fix the issue.

Users often use the casting feature to watch movies and shows from their small-screen devices to a bigger one. I know that a computer does have a bigger screen, but not as big for an entire family sitting together. Connecting HDMI’s, VGA’s and using USB Flash Drives. Just cast your Windows 10 system to any Smart TV or Projector and you are good to go.

Cast to Device not working in Windows 10

There can be multiple reasons why your system is unable to cast anything. These reasons may include low network connectivity, device not discoverable, firmware error on displaying device, etc. But, let’s assume that everything is good with the casting device but not with your Windows 10 device. If this is the case with you, you can try the methods mentioned below:

1. Turn on Network Discovery
2. Update Network Drivers
3. Check for Streaming Options
4. Change Cast to Device settings in Windows Defender Firewall
5. Check Microsoft LLDP Protocol Driver Setting
6. Run Hardware Troubleshooter.

You may find more methods on the internet. But today we are going to cover the most basic and effective methods.

1] Turn on Network Discovery

If you are a geek then you may know how networks work. Windows 10 keeps all the networks as Private by default. But to cast something you need to Turn On network discovery so that the device is visible.

1. Press Win + R keys, the Run window will open up.
2. Type control and hit Enter. The Control Panel will open up.

   

3. In Control Panel look for Network and Sharing Center and click on it.
4. On the left panel click on Change advanced sharing settings.

   

5. In the Advanced Sharing settings window, enlarge Guest or Public options. In-Network discovery, click on Turn on network discovery.
6. Perform Step 5 for File and printer sharing and click on Save Changes.

   

7. Now you can try Cast to Device again.

If the error is still present you can go to the next method.

2] Update Network Drivers

We often see that errors occur due to outdated or corrupted drivers. There can be multiple ways of updating drivers, from downloading drivers to updating manually. Today we will see how to update drivers manually.

1. Press Win + X keys. The Quick Access menu will open up.
2. Click on Device Manager.

   

3. In Device Manager window, look for Network adapters and click on it.
4. Look for the wireless adapter (if you are connecting wirelessly), right-click on it and click on Update driver.

   

5. In the update window, click on Search automatically for updated driver software.

   

If the updates are available then it will automatically install them. When the process is over, try casting your device again. Please make sure that your system is set to the automatic installation of updates. If it’s not then this method will throw an error.

3] Check for Streaming Options

Many times when we want to do something but aren’t able to do it is because enough permissions are not provided. But to be on the safer side make sure that you have the latest drivers installed in your system.

1. Press Win + R keys, the Run window will open up.
2. Type control and hit enter. The Control Panel will open up.

   

3. In Control Panel look for Network and Sharing Center and click on it.
4. On the left panel, click on Media streaming options.

   

5. If the media streaming is disabled then you need to turn it on. Click on Turn on media streaming.

   

6. Make sure that your device is visible on the local network. Allow the media sharing on devices and click on OK.

   

As soon as these changes are made to restart your system once and you are good to go.

4] Change Cast to Device settings in Windows Defender Firewall

There are times when the connection is interrupted due to a defending firewall. It is possible that the firewall you are using for safety purposes is interrupting in between.

1. Press Win + R keys. The Run window will open up.
2. Type control and hit enter.

   

3. In Control Panel, look for Windows Defender Firewall and click on it.
4. On the left panel, click on Allow an app or feature through Windows Defender Firewall.

   

5. Search for Cast to Device functionality in the list of Allowed apps and features.
6. Make sure that Private and Public, both the checkboxes are checked. If not then click on Change settings then check both the checkboxes.
7. Click on OK and you are good to go.

   

This method makes sure that the Cast to Device functionality is enabled in Private as well as Public networks. In short, it is the best way to check for any permission issues if a firewall is enabled.

5] Check Microsoft LLDP Protocol Driver Setting

Now, the last resort for you is to check network adapter settings. If your network adapter drivers are updated and firewall is allowing you to cast your device, then now is the time to check the adapter settings. Sometimes the settings may get the change because of multiple adapter options available on your system. The basic reason behind it is using Wi-Fi as well as Ethernet for connecting to the networks.

1. Press Win + R keys, the Run window will open up.
2. Type control and hit enter. The Control Panel will open up.

   

3. In Control Panel look for Network and Sharing Center and click on it.
4. On the left panel click on Change adapter settings.

   

5. Now right-click on the adapter you are connected to and click on Properties.

   

6. In the list of items used by your connections, check if the Microsoft LLDP Protocol Driver is checked or not. If not then click on the checkbox and click on OK.

   

Restart your system after these settings are done. It will definitely solve your problem. If any of the methods fail to solve your problem, make sure that you revert the changes made to the Network and Sharing options.

6] Run Hardware Troubleshooter

Run the Hardware Troubleshooter and see if it helps you.

Let us know in the comments below which of the method worked for you.

PS: Cast Media to device is not working on Edge? Enable this flag!

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