您是否拥有带有 USB-Type C 连接的^{(C connection)}Windows 10 Mobile 智能手机^{(Mobile smartphone)}，例如Lumia 950或Lumia 950 XL，并且适用于 Windows 的Project My ^(Windows)Screen 应用程序^{(Project My Screen app)}似乎无法运行？它启动，它只是显示一个黑屏，而不是从智能手机投影图像。如果发生这种情况并且您不知道该怎么做，请阅读本指南以了解您必须做什么才能解决问题：

问题：Project My Screen 无法投影智能手机中的图像

适用于 Windows的^{( app for Windows)}Project My Screen 应用程序的问题在于它被设计为仅适用于USB 2.0连接。具有Windows 10 ^{(Windows 10)}Mobile 和 USB-Type C 连接的^{(Mobile and USB-Type C connections)}现代^(Modern)智能手机使用USB 3.0标准。因此，如果您将智能手机的USB 3.0连接线插入^{(connection cable)}Windows 计算机^{(Windows computer)}上的USB 3.0并启动Project My Screen 应用程序^{(Project My Screen app)}，您得到的只是黑屏，如下图所示。

解决方案：使用USB 2.0端口或USB 2.0 延长线^{(extension cable)}

USB 3.0标准的美妙之处在于它向后兼容。因此，您将 Windows 10 Mobile 智能手机的^{(Mobile smartphone)}连接电缆^{(connection cable)}插入Windows 计算机上的^{(Windows computer)}USB 2.0端口，然后它就会工作，Project My Screen 应用程序^{(Project My Screen app)}也会工作。

但是，您的Windows 计算机或设备^{(Windows computer or device)}上可能没有USB 2.0端口。这种情况尤其发生在Surface Pro等混合设备上，您只有USB 3.0端口^{(port s)}可用。如果您遇到这种情况，那么您唯一的解决方案是购买USB 2.0延长线^{(extension cable)}。您可以在下图中看到这样的电缆。

这是您可以在 Amazon.com^{(on Amazon.com)}上找到的一个，另一个您可以在 Amazon.co.uk^{(on Amazon.co.uk)}上找到的。获得USB 2.0 延长电缆^{(extension cable)}后，将智能手机的电缆插入此电缆，然后将延长电缆^{(extension cable)}的另一端插入Windows 计算机的^{(Windows computer)}USB 3.0端口。由于延长电缆^{(extension cable)}使用USB 2.0工作，Windows 计算机上的^{(Windows computer)}USB 3.0端口也可以使用USB 2.0工作。

然后，当您启动Project My Screen 应用程序^{(Project My Screen app)}时，系统会要求您允许屏幕投影。进行必要的确认，Project My Screen 应用程序将显示装有^{(Project My Screen app)}Windows 10 Mobile的智能手机屏幕上的内容。

它对你有用吗？

你^(Did)在家里试过这个修复吗？它对你有用^(Did)吗？你知道这个问题的其他解决方案吗？不幸的是，微软^(Microsoft)需要修复Project My Screen应用程序，以便它与USB 3.0连接一起工作，而不仅仅是 USB 2.0。Lumia 950或Lumia 950 XL等智能手机最有可能被提供演示文稿的商业客户使用，这些人可能需要使用此应用程序通过他们的智能手机进行演示。对于致力于为Windows 10^{(Windows 10)} 移动版^(Mobile)创建应用程序的软件开发人员来说，它也很有用。

Fix the Project My Screen app not working on Lumia 950 or Windows 10 Mobile

Do yоu have a Windows 10 Mobіle smartphone, with a USB-Τype C cоnnection, lіke the Lumia 950 or the Lumia 950 XL and the Project My Screen app for Windows doesn't seem to work? It starts and it just shows a black screen, without projecting the image from the smartphone. If that happеns and yоυ don't know what to do, then read this guide to learn what you have to do in order to fіx things:

The problem: Project My Screen doesn't project the image from your smartphone

The problem with the Project My Screen app for Windows is that it has been designed to work only with USB 2.0 connections. Modern smartphones with Windows 10 Mobile and USB-Type C connections use the USB 3.0 standard. Therefore, if you plug in the USB 3.0 connection cable from your smartphone into a USB 3.0 on your Windows computer and start the Project My Screen app, all you get is a black screen, like the one below.

The solution: Use a USB 2.0 port or a USB 2.0 extension cable

The beauty of the USB 3.0 standard is that it is backwards compatible. Therefore, you plug the connection cable from your Windows 10 Mobile smartphone into a USB 2.0 port on your Windows computer, then it will work and so will the Project My Screen app.

However, it may happen that you don't have a USB 2.0 port on your Windows computer or device. This happens especially on hybrid devices like the Surface Pro, where you have only USB 3.0 port s available. If that is the case for you, then your only solution is to purchase a USB 2.0 extension cable. You can see such a cable in the picture below.

Here's one you can find on Amazon.com and another you can find on Amazon.co.uk. Once you have the USB 2.0 extension cable, plug the cable from your smartphone into this cable and then the other end of the extension cable into the USB 3.0 port of your Windows computer. Since the extension cable works using USB 2.0, the USB 3.0 port on your Windows computer will also work using USB 2.0.

Then, when you start the Project My Screen app, you will be asked to allow the screen projection. Make the necessary confirmations and the Project My Screen app will display what is on the screen of your smartphone with Windows 10 Mobile.

Did it work for you?

Did you try this fix at home? Did it work for you? Do you know other solutions to this problem? Unfortunately, Microsoft needs to fix the Project My Screen app so that it works with USB 3.0 connections, not only USB 2.0. Smartphones like Lumia 950 or Lumia 950 XL are most likely to be used by business customers who deliver presentations and such people may need to use this app to deliver presentations using their smartphones. It's also useful to software developers who work on creating apps for Windows 10 Mobile.

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