如果在您将 Windows 11/10 更新或升级到更新的构建或版本后，您注意到Miracast不再工作，因为您无法投射到设备，那么您可以尝试本文中提供的解决方案来解决问题。

Miracast 升级后无法正常工作

Miracast 更新后无法正常工作

如果您遇到此问题，您可以尝试下面我们推荐的解决方案，看看是否有助于解决问题。

运行网络适配器疑难解答
更新设备驱动程序
确保^(Ensure)基本服务正在运行
启用网络发现
打开媒体流

让我们看一下关于列出的每个解决方案所涉及的过程的描述。

1]运行网络适配器疑难解答^{(Run Network Adapter Troubleshooter)}

运行网络适配器疑难解答

此解决方案要求您运行网络适配器疑难解答并查看问题是否会得到解决。如果没有，请尝试下一个解决方案。

2]更新设备驱动程序

这个问题也可能是由于旧的网卡驱动程序造成的。在这种情况下，您可以通过设备管理器手动更新驱动程序^{(update your drivers manually via the Device Manager)}，也可以在 Windows 更新下的可选更新^{(get the driver updates on the Optional Updates)}部分获取驱动程序更新。

您也可以从网络^(Network)适配器制造商的网站下载最新版本的驱动程序。^{(download the latest version of the driver)}

3]确保基本服务^(Services)正在运行

确保基本服务正常运行

按Windows key + R调用“运行”对话框。
在 Run 对话框中，输入services.msc并按 Enter打开 Services^{(open Services)}。
在“服务^(Services)”窗口中，滚动并找到以下服务。
- DNS 客户端
- 功能发现资源发布^{(Discovery Resource Publication)}
- SSDP 发现
- UPnP 设备主机
如果这些服务中的任何一个没有运行，请一一双击它们，然后单击“服务状态^{(Service status)}”部分下的“开始^(Start)”按钮。
退出服务控制台。

检查您现在是否可以投射到设备 - 如果问题仍然存在，请尝试下一个解决方案。

4]启用网络发现

启用网络发现

为了能够投射到设备，必须在您的 Windows 10 计算机上启用网络共享功能。您可以检查您的计算机上是否启用了网络发现。^{(Network Discovery is enabled)}同时启用文件和打印机共享^{(enable File and printer sharing)}。

5]打开媒体流

打开媒体流

要在 Windows 10 设备上打开媒体流，请执行以下操作：

按键盘上的Windows 键^{(Windows key)}。
在搜索栏中键入媒体流选项^{(Media Streaming Options)}。
从结果中选择它。
在打开的窗口中，单击打开媒体流^{(Turn on media streaming)}。
单击确定^(OK)。

现在，您应该可以再次投射到设备上。

希望这可以帮助！

相关文章^{(Related post)}：您的 PC 不支持 Miracast – Windows 错误^{(Your PC doesn’t support Miracast – Windows error)}

Miracast not working on Windows 11/10 after Update

If аfter you update or upgrade Windowѕ 11/10 to a newer build or version, yoυ notice that Miracast is no longer working, as in you’re unable to cast to devices, then you can try the solutions presented in this post to resolve the issue.

Miracast not working after upgrade

Miracast not working after Update

If you’re faced with this issue, you can try our recommended solutions below and see if that helps to resolve the issue.

Run Network Adapter Troubleshooter
Update device drivers
Ensure essential Services are running
Enable Network Discovery
Turn on Media Streaming

Let’s take a look at the description of the process involved concerning each of the listed solutions.

1] Run Network Adapter Troubleshooter

Run Network Adapter Troubleshooter

This solution requires you to run the Network Adapter Troubleshooter and see if the issue will be resolved. If not, try the next solution.

2] Update device drivers

This problem could be also due to an old network card driver. In this case, you can either update your drivers manually via the Device Manager, or you can get the driver updates on the Optional Updates section under Windows Update.

You can also download the latest version of the driver from the Network adapter manufacturer’s website.

3] Ensure that the essential Services are running

Ensure essential services are running

Press Windows key + R to invoke the Run dialog.
In the Run dialog box, type services.msc and hit Enter to open Services.
In the Services window, scroll and locate the services below.
- DNS Client
- Function Discovery Resource Publication
- SSDP Discovery
- UPnP Device Host
If any of these services are not running, double-click on them one by one and click on the Start button under the Service status section.
Exit Services console.

Check if you can now cast to devices – if the issue persists, try the next solution.

4] Enable Network Discovery

Enable Network Discovery

To be able to cast to device, the network sharing feature has to be enabled on your Windows 10 computer. You can check if Network Discovery is enabled on your computer. Also enable File and printer sharing.

5] Turn on Media Streaming

Turn on Media Streaming

To turn on media streaming on your Windows 10 device, do the following:

Press Windows key on your keyboard.
Type Media Streaming Options in the search bar.
Select it from the result.
In the window that opens, click on Turn on media streaming.
Click OK.

Now, you should be able to cast to devices again.

Hope this helps!

晖方

About the author

我是一名免费软件开发人员和 Windows Vista/7 倡导者。我已经写了数百篇关于操作系统相关主题的文章，包括提示和技巧、修复指南和最佳实践。我还通过我的公司 Help Desk Services 提供与办公室相关的咨询服务。我对 Office 365 的工作原理、功能以及如何最有效地使用它们有着深刻的理解。

Miracast 在更新后无法在 Windows 11/10 上运行