如果您在Windows 10上遇到Microsoft 无线显示适配器^{(Microsoft Wireless Display Adapter)}的问题，那么在这篇文章中，我们将提供一些故障排除步骤来帮助您解决问题。您可能会遇到问题，您发现您的Microsoft 无线显示适配器^{(Microsoft Wireless Display Adapter)}无法连接、工作、显示或没有声音。

Microsoft 无线显示适配器^{(Microsoft Wireless Display Adapter)}不工作

开始之前，请将适配器插入HDTV、显示器或投影仪上的HDMI 端口和^{(HDMI port)}USB充电端口。适配器通过USB充电端口获取电力。

为获得最佳性能，请将您的设备保持在HDTV、显示器或投影仪23 英尺^{(23 feet)}的范围内。要将适配器连接到您的HDTV、显示器或投影仪，请参阅产品指南^{(product guide)}以了解您拥有的适配器类型，如下图所示。该适配器一次只能连接一台HDTV、显示器或投影仪。

部分Android^(Android)设备支持 Microsoft 无线显示适配器^{(Microsoft Wireless Display Adapter)}（带有Microsoft 四方形徽标^{(Microsoft Four Square Logo)}） 。如果您需要更多关于从您的Android或其他设备投影的帮助，请查看您的设备制造商^{(device manufacturer)}的网站。

安装固件更新时，Microsoft 无线显示适配器应用程序^{(Microsoft Wireless Display Adapter app)}必须位于您设备的前台。暂停应用程序也会暂停更新或可能导致更新失败。

打开无线显示适配器应用程序^{(Wireless Display Adapter app)}并连接您的适配器。  在应用程序的导航窗格^{(navigation pane)}左侧选择固件^{(Select Firmware)}，您将在那里获得更新固件的详细信息。

您在使用适配器时可能遇到的问题可能包括但不限于如下：

1. Microsoft 无线显示适配器应用程序^{(Microsoft Wireless Display Adapter app)}的问题。
2. 显示^(Display)未按比例显示，或显示的某些部分缺失。
3. 视频或音频播放问题。
4. 无法将您的设备连接到适配器。

现在，让我们深入研究详细的故障排除步骤。

1] Microsoft 无线显示适配器应用程序^{(Microsoft Wireless Display Adapter app)}的问题^(Issues)

这里有一些可以尝试的东西。

A) 应用程序显示“您未连接”

如果应用程序中出现“^{(message “)}您未连接”消息：

• 确保^(Make)适配器的HDMI 端^{(HDMI end)}和USB 端^{(USB end)}都连接到您的HDTV、显示器或投影仪。
• 在应用程序中，选择 刷新^(Refresh)。

B）应用程序^(App)总是显示“等待连接”

如果应用程序总是显示“等待连接”，请首先确保您的设备已连接到适配器，然后断开适配器并重新连接。

这是如何做：

• ^(Swipe)从屏幕右边缘向内轻扫或在任务栏中选择^{(screen or select)} 操作中心^{(Action Center)}。
• 选择 连接^(Connect)。适配器将出现在菜单顶部。（如果适配器未^{(adapter doesn)}出现在顶部，则您的设备^{(device isn)}未连接到适配器。）
• 选择Microsoft 无线显示适配器^{(Microsoft Wireless Display Adapter)}的名称，然后选择 断开连接^(Disconnect)。
• ^(Swipe)从屏幕右边缘^{(screen or select)} 滑入或选择操作中心^{(Action Center)}。
• 选择 Connect，然后从显示器列表中选择Microsoft 无线显示适配器^{(Microsoft Wireless Display Adapter)}的名称以将您的设备重新连接到适配器。

如果您使用代理服务器访问互联网，适配器将无法工作。

2]显示^(Display)未按比例显示，或显示的某些部分缺失

如果您设备^{(device doesn)}上的部分屏幕没有出现在您的第二个屏幕上，则显示可能未按比例显示。尝试以下解决方案：

A) 调整设备上的分辨率

如果您已将设备上的分辨率设置为低于其默认设置^{(default setting)}的分辨率，您可以提高分辨率，使其正确适合您的第二个屏幕。

这是如何做：

• 在任务栏上的搜索框中^{(search box)}，输入屏幕分辨率^{(screen resolution)}，然后从结果中选择 更改屏幕分辨率 ^{(Change the screen resolution )}。
• 在 分辨率^(Resolution)下，单击下拉菜单的 V 形，然后选择推荐^{(Recommended)}的分辨率。最高分辨率是设备上推荐的分辨率。

B) 使用Microsoft 无线显示适配器应用程序^{(Microsoft Wireless Display Adapter app)}调整显示设置

您可以使用适配器应用程序^{(adapter app)}来更改设备上的屏幕缩放到HDTV、显示器或投影仪上的屏幕的方式。

这是如何做：

• 打开Microsoft 无线显示适配器应用程序^{(Microsoft Wireless Display Adapter app)}。
• 在 调整显示下，向右拖动滑块，直到您可以在^{(Adjust display)}HDTV、显示器或投影仪上看到设备上的所有内容。

3]视频或音频播放问题^(Issues)

以下是一些可以尝试的解决方案：

A）第二个屏幕上没有显示

如果您可以将设备连接到适配器，但^{(adapter but nothing displays)}第二个屏幕上没有显示任何内容，请尝试执行以下解决方案 4]^{(solution 4])}中的步骤。如果这不能解决问题，请尝试以下解决方案：

• 确保^(Make)您的设备设置为复制或扩展屏幕。
• 拔下适配器的USB 端^{(USB end)}将其关闭，然后将其重新插入以再次打开。
• 确保^(Make)您的HDTV、显示器或投影仪设置为HDMI 通道^{(HDMI channel)}。要检查或更改显示器上的视频输入^{(video input)}设置，请参阅设备随附的产品指南或访问制造商的网站。^{(product guide)}
• 确保^(Make)您的HDTV、显示器或投影仪支持HDCP。如果您不确定您的显示器是否支持HDCP，请参阅设备随附的产品指南或访问制造商的网站。^{(product guide)}

B)视频^(Video)像素化或音频卡顿

如果您注意到视频中有像素化或音频卡顿，请尝试以下操作：

• 将您的设备移近^{(device closer)}适配器。为获得最佳性能，您的设备应在HDTV、显示器或投影仪的 23 英尺范围内。
• 将适配器远离微波炉、无绳电话或婴儿监视器。诸如此类的常见家用电子产品可能会导致射频^{(Common household)}干扰^{(frequency interference)}，从而可能会中断您的设备和适配器之间的连接。
• 如果您没有足够的空间将适配器插入第二个屏幕上的HDMI 端口，请使用适配器随附的包装盒中的^{(HDMI port)}HDMI 延长^{(HDMI extension)}线。如果您已将适配器插入HDMI端口^{(HDMI port)}角度，这可能会导致视频质量^{(video quality)}出现问题。

C) 基于应用程序的视频在连接到无线显示适配器^{(Wireless Display Adapter)}时无法播放

如果您在播放来自Netflix、YouTube或Amazon Instant Video等应用程序服务的^{(application service)}视频和内容^{(video and content)}时遇到问题，请尝试以下步骤：

• 确保^(Make)适配器是最新的。请参阅上面提供的Microsoft 指南^{(Microsoft guide)}。
• 关闭并重新启动^{(Close and relaunch)}，或刷新应用程序。
• 断开与无线显示适配器^{(Wireless Display Adapter)}的连接。
• 重启设备。
• 重新连接到适配器并再次尝试播放视频。

D)视频^(Video)在您的设备上播放，但在您的第二个屏幕上冻结

如果视频在您的设备上正常播放，但在您的第二个屏幕上冻结，请断开适配器与您的设备和显示器的连接，然后重新连接。

这是如何做：

• ^(Swipe)从屏幕右边缘滑入或选择任务栏中的操作中心^{(action center)}。
• 选择 连接^(Connect)，选择Microsoft 无线显示适配器^{(Microsoft Wireless Display Adapter)}的名称，然后选择 断开连接^(Disconnect)。
• 从HDTV^(HDTV)、显示器或投影仪上拔下适配器的两端，然后重新插入。
• ^(Swipe)从屏幕右边缘向内轻扫或选择操作中心^{(action center)}。
• 选择 Connect，然后在显示器列表中，选择Microsoft 无线显示适配器^{(Microsoft Wireless Display Adapter)}的名称以将您的设备重新连接到适配器。

E) 视频质量差

如果流媒体视频的质量很差，这里有一些方法可以帮助改进它：

• 确保^{(Make sure)}您没有使用HDMI到VGA 转换器^{(VGA converter)}。从HDMI转换为VGA会降低视频输出^{(video output)}的信号强度，并且会使图像失真。
• ^{(Reduce radio)} 将适配器远离微波炉、无绳电话和其他常见的家用电子设备，以减少射频干扰。^{(frequency interference)}
• 将您的设备移近^{(device closer)}适配器。适配器在距离您的设备 23 英尺范围内时效果最佳。
• 下载更高质量的^{(Download higher-quality)}视频。源本身可能质量较差，这将影响流视频的质量。

F)视频^(Video)在连接的显示器上播放，但音频来自您的设备

• 在任务栏上的搜索框中^{(search box)}，键入声音^(sound)，然后 从结果中选择声音 。^(Sound )
• 选择 播放^(Playback) > Speakers/Intel WiDi  > 设置默认值^{(Set Default)} > 确定^(OK)。

G) 无法更改您设备上的分辨率

如果您的HDTV、显示器或投影仪的分辨率低于1080p，则您的设备在连接到显示器时将默认使用该分辨率。

您需要一台支持高达 1080p 分辨率的HDTV 、监视器或投影仪，才能以该分辨率从您的设备流式传输内容。^(HDTV)断开设备与适配器的连接后，您的设备将恢复为默认分辨率^{(default resolution)}。

4]无法将您的设备连接到适配器

如果您在将设备连接到Microsoft 无线显示适配器^{(Microsoft Wireless Display Adapter)}时遇到问题，请按此特定顺序尝试这些解决方案。

A) 安装最新更新

为您的设备和 Windows^{(device and Windows)}安装最新更新有助于解决许多常见的连接问题。对于Windows设备，请参阅此TWC 指南^{(TWC guide)}。

如果安装更新没有帮助，请继续下一个解决方案。

B) 检查您的HDMI 和 USB 连接^{(HDMI and USB connections)}。

确保^(Make)适配器的HDMI 端和 USB 端^{(HDMI end and USB end)}连接正确。

• 确保^(Make)适配器的HDMI 端^{(HDMI end)}连接到HDTV、显示器或投影仪上的HDMI 端口。^{(HDMI port)}如果需要，请使用随附的HDMI 延长线。^{(HDMI extension)}
• 确保^(Make)适配器的USB 端^{(USB end)}已插入USB 电源^{(USB power)}。
• 如果您要连接的HDTV、显示器或投影仪没有USB充电端口，您可以使用设备电源^{(device power supply)}或任何其他USB 充电器上的^{(USB charger)}USB充电端口。
• 如果您的USB 连接器^{(USB connector)}需要更长的长度，请使用USB 延长^{(USB extension)}线。
• 确保^(Make)您用于USB 电源^{(USB power)}的电源插座工作正常。通过插入其他东西来测试它。

检查连接后仍有问题，请继续下一个解决方案。

C) 重置适配器

尝试重置适配器。如果您忘记了密码，这也很有帮助。

这是如何做：

• 在有线连接旁边的适配器上，按住重置按钮^{(reset button)}10 秒钟。适配器上的LED 灯^{(LED light)}将闪烁。
• 当第二个屏幕上出现“准备连接”消息时，从设备屏幕的右边缘向内轻扫或在任务栏中选择^{(device screen or select)} 操作中心^{(Action Center)}。
• 选择 Connect，然后在显示器列表中，选择Microsoft Wireless Display Adapter的名称。

如果问题^{(th problem)}仍未解决，请继续下一个解决方案。

D) 卸下适配器并重新连接^{(adapter and reconnect)}。

您的设备和适配器之间的连接可能存在问题。要解决此问题，请尝试断开适配器与设备的连接并重新连接。

这是如何做：

• 选择开始 ^(Start ) > 设置 ^(Settings ) > 设备^(Devices)   > 连接的设备^{(Connected devices)}。
• 在 投影仪^(Projectors)下，选择Microsoft 无线显示适配器^{(Microsoft Wireless Display Adapter)}的名称，然后选择 移除设备^{(Remove device)}。
• 选择 添加设备^{(Add a device)} 以连接您的设备和Microsoft 无线显示适配器^{(Microsoft Wireless Display Adapter)}。

如果断开并重新连接适配器^{(adapter doesn)}不能解决问题，请继续执行下一个解决方案。

E) 允许适配器通过Windows 防火墙^{(Windows Firewall)}进行通信。

Windows 防火墙^{(Windows Firewall)}可能会阻止适配器连接到您的设备。要允许适配器通过防火墙进行通信，请执行以下操作：

• 在任务栏的搜索框中^{(search box)}，输入allow firewall，然后在搜索结果中选择 Allow an app through Windows Firewall。
• 在 Name下，找到 Wireless Display 并确保 选中Private 和 Public 。然后，单击确定^(OK)。

注意^(Note)：如果您无法在允许的应用程序和功能框中^{(Allowed apps and features)}选择任何内容^{(select anything)} ，则您没有以管理员身份登录。选择 更改设置^{(Change Settings)}，键入您的管理员密码^{(administrator password)}，然后选择 是^(Yes)。您的管理员密码^{(administrator password)}应与您用于设置设备的密码相同。

如果您的防火墙设置为允许适配器进行通信，但您仍然无法连接，请继续执行下一个解决方案。

F) 更改设备上的无线频段^{(wireless frequency band)}。

Microsoft 无线显示适配器^{(Microsoft Wireless Display Adapter)}可以与2.4GHz或5GHz无线频段上的设备进行通信，但在将设备与适配器配对时，您必须在设备上启用 2.4GHz 频段。

如果您仍然无法将设备连接到适配器，则可能是 2.4GHz 频段被禁用。

Surface Pro、Surface Pro 2和Surface 2默认使用 2.4GHz 频段，并且无法更改。

以下是启用 2.4 GHz或 5 GHz频段的方法：

• 右键单击开始^(Start)并选择设备管理器^{(Device Manager)}。
• 单击Network adapters^{(Network adapters)}旁边的 V 形图标，以折叠该部分。
• 右键单击设备的网络适配器。选择属性^(Properties) > 高级^(Advanced)。

如果您没有看到“高级^(Advanced)” 选项卡，则说明您没有以管理员身份登录。选择 更改设置^{(Change Settings)}，输入您的管理员密码，然后选择^{(administrator password and select)} 是^(Yes)。您的管理员密码^{(administrator password)}应与您用于设置设备的密码相同。接下来，选择 高级^(Advanced)。

• 在 Property字段下，选择 Band。
• 在 值^{(Value )}字段下，单击下拉菜单的 V 形并选择^{(menu and select)} 自动^(Auto)。
• 单击确定^{( OK)}。

如果仍然无法连接，请继续执行下一个解决方案。

G) 重新安装英特尔核芯显卡驱动程序^{(Intel HD Graphics driver)}。

• 选择开始^(Start)  > 设置^(Settings)  > 设备^(Devices)  > 连接的设备^{(Connected devices)}。
• 选择添加设备^{(Add a device)} 以连接您的设备和Microsoft 无线显示适配器^{(Microsoft Wireless Display Adapter)}。

如果您仍然无法将设备连接到Microsoft 无线显示适配器^{(Microsoft Wireless Display Adapter)}，请继续执行下一个解决方案。

H)卸载并重新安装^{(Uninstall and Reinstall)}设备Wi-Fi 驱动程序^{(Wi-Fi driver)}。

请参阅上面的TWC 指南^{(TWC guide)}。在您必须卸载Wi-Fi 驱动程序^{(Wi-Fi driver)}后，重复上述相同步骤，连接您的设备和Microsoft 无线显示适配器^{(Microsoft Wireless Display Adapter)}。

在您用尽所有这些解决方案后，仍然无法将您的设备连接到您的Microsoft 无线显示适配器^{(Microsoft Wireless Display Adapter)}，请联系Microsoft 支持^{(Microsoft Support)}。

Hope this helps!

Fix Microsoft Wireless Display Adapter issues on Windows 10

If you run into a snag with a Micrоsoft Wireless Displаy Adapter on Windows 10, then in this post, we provide some troubleshooting steps to help you resolve the issues. You may face issues where you find that your Microsoft Wireless Display Adapter is not connecting, working, showing up or does not have sound.

Microsoft Wireless Display Adapter not working

Before you begin, plug the adapter into an HDMI port on your HDTV, monitor, or projector and into a USB charging port. The adapter gets its power through the USB charging port.

For best performance, keep your device within 23 feet of the HDTV, monitor, or projector. To connect the adapter to your HDTV, monitor, or projector, refer to the product guide for the type of adapter you have, as pictured below. The adapter can connect to only one HDTV, monitor, or projector at a time.

The Microsoft Wireless Display Adapter (with Microsoft Four Square Logo) is supported on select Android devices. If you need more help projecting from your Android or another device, check your device manufacturer’s website.

The Microsoft Wireless Display Adapter app must be in the foreground on your device while installing firmware updates. Suspending the app will also suspend the update or may cause it to fail.

Open the Wireless Display Adapter app and connect your adapter.  Select Firmware on the left side of the navigation pane in the app and you will get the details there to update the firmware.

The issue(s) you might encounter with the adapter can range from but not limited to, as follows:

1. Issues with the Microsoft Wireless Display Adapter app.
2. Display is not to scale, or some parts of the display are missing.
3. Issues with video or audio playback.
4. Unable to connect your device to the adapter.

Now, let’s delve into the detailed troubleshooting steps.

1] Issues with the Microsoft Wireless Display Adapter app

Here are some things to try.

A) The app shows “You’re not connected”

If the message “You’re not connected” appears in the app:

• Make sure both the HDMI end and the USB end of the adapter are connected to your HDTV, monitor, or projector.
• In the app, select Refresh.

B) App always shows “Waiting for connection”

If the app always shows “Waiting for connection,” first make sure your device is connected to the adapter, then disconnect the adapter and reconnect it.

Here’s how:

• Swipe in from the right edge of the screen or select Action Center in the taskbar.
• Select Connect. The adapter will appear at the top of the menu. (If the adapter doesn’t appear at the top, your device isn’t connected to the adapter.)
• Select the name of the Microsoft Wireless Display Adapter and select Disconnect.
• Swipe in from the right edge of the screen or select Action Center.
• Select Connect, and from the list of displays, select the name of the Microsoft Wireless Display Adapter to reconnect your device to the adapter.

The adapter won’t work if you’re using a proxy server to access the internet.

2] Display is not to scale, or some parts of the display are missing

If part of the screen on your device doesn’t appear on your second screen, the display might not be to scale. Try these solutions:

A) Adjust the resolution on your device

If you’ve set the resolution on your device to a lower resolution than its default setting, you can increase the resolution so it will fit correctly on your second screen.

Here’s how:

• In the search box on the taskbar, type screen resolution, then select Change the screen resolution from the results.
• Under Resolution, click the chevron for the drop-down menu and then select the resolution that is Recommended. The highest resolution is the recommended resolution on the device.

B) Use the Microsoft Wireless Display Adapter app to adjust display settings

You can use the adapter app to change how the screen on your device scales to the screen on your HDTV, monitor, or projector.

Here’s how:

• Open the Microsoft Wireless Display Adapter app.
• Under Adjust display, drag the slider to the right until you can see everything that’s on your device on the HDTV, monitor, or projector.

3] Issues with video or audio playback

Here are some solutions to try:

A) Nothing displays on the second screen

If you can connect your device to the adapter but nothing displays on your second screen, try performing the steps in the solution 4] below. If that doesn’t solve the issue, try these solutions:

• Make sure your device is set to duplicate or extend the screen.
• Unplug the USB end of the adapter to turn it off, and plug it back in to turn it on again.
• Make sure your HDTV, monitor, or projector is set to the HDMI channel. To check or change the video input settings on your display, refer to the product guide that came with your device or go to the manufacturer’s website.
• Make sure your HDTV, monitor, or projector supports HDCP. If you aren’t sure if your display supports HDCP, refer to the product guide that came with your device or go to the manufacturer’s website.

B) Video is pixelated or audio stutters

If you notice pixelation in the video or if the audio stutters, try the following:

• Move your device closer to the adapter. For best performance, your device should be within 23 feet of your HDTV, monitor, or projector.
• Move the adapter away from microwave ovens, cordless phones, or baby monitors. Common household electronics such as these can cause radio frequency interference that may disrupt the connection between your device and the adapter.
• If you don’t have enough room to plug the adapter into the HDMI port on your second screen, use the HDMI extension cable that was included in the box your adapter came in. If you’ve plugged the adapter into the HDMI port at an angle, this can cause issues with the video quality.

C) App-based video cannot play while connected to the Wireless Display Adapter

If you’re having issues playing video and content from an application service such as Netflix, YouTube, or Amazon Instant Video, try the below steps:

• Make sure the adapter is up to date. Refer to the Microsoft guide provided above.
• Close and relaunch, or refresh the app.
• Disconnect from the Wireless Display Adapter.
• Restart the device.
• Reconnect to the adapter and try playing the video again.

D) Video plays on your device but is frozen on your second screen

If video plays correctly on your device but is frozen on your second screen, disconnect the adapter from your device and the display, and reconnect it.

Here’s how:

• Swipe in from the right edge of the screen or select the action center in the taskbar.
• Select Connect, select the name of the Microsoft Wireless Display Adapter, and select Disconnect.
• Unplug both ends of the adapter from your HDTV, monitor, or projector and plug them in again.
• Swipe in from the right edge of the screen or select the action center.
• Select Connect, and in the list of displays, select the name of the Microsoft Wireless Display Adapter to reconnect your device to the adapter.

E) Poor video quality

If the quality of the streaming video is poor, here are some ways to help improve it:

• Make sure you’re not using an HDMI to VGA converter. Converting from HDMI to VGA reduces the signal strength of the video output and can distort the images.
• Reduce radio frequency interference by moving the adapter away from microwave ovens, cordless phones, and other common household electronics.
• Move your device closer to the adapter. The adapter works best when it’s within 23 feet of your device.
• Download higher-quality video. The source itself might be of poor quality, which will affect the quality of the streaming video.

F) Video plays on the connected display, but audio comes from your device

• In the search box on the taskbar, type sound, and then select Sound from the results.
• Select Playback > Speakers/Intel WiDi > Set Default > OK.

G) Can’t change the resolution on your device

If the resolution on your HDTV, monitor, or projector is less than 1080p, your device will default to that resolution while it’s connected to the display.

You need an HDTV, monitor, or projector that supports up to 1080p resolution to stream content from your device in that resolution. After you disconnect your device from the adapter, your device will revert to its default resolution.

4] Unable to connect your device to the adapter

If you’re having trouble connecting your device to the Microsoft Wireless Display Adapter, try these solutions in this particular order.

A) Install the latest updates

Installing the latest updates for your device and Windows can help fix many common connection issues. For Windows devices, refer to this TWC guide.

If installing updates doesn’t help, proceed with the next solution.

B) Check your HDMI and USB connections.

Make sure both the HDMI end and USB end of the adapter are connected correctly.

• Make sure the HDMI end of the adapter is connected to the HDMI port on your HDTV, monitor, or projector. Use the included HDMI extension cable if needed.
• Make sure the USB end of the adapter is plugged into a USB power source.
• If the HDTV, monitor, or projector you’re connecting to doesn’t have a USB charging port, you can use the USB charging port on a device power supply or any other USB charger.
• Use a USB extension cord if you need more length for your USB connector.
• Make sure the electrical outlet you’re using for USB power is working properly. Test it by plugging in something else.

Still having issues after checking your connections, proceed with the next solution.

C) Reset the adapter

Try resetting the adapter. This is also helpful if you’ve forgotten your password.

Here’s how:

• On the adapter next to the wired connection, press and hold the reset button for 10 seconds. The LED light on the adapter will blink.
• When the message “Ready to connect” appears on your second screen, swipe in from the right edge of your device screen or select Action Center in the taskbar.
• Select Connect, and in the list of displays, select the name of the Microsoft Wireless Display Adapter.

If th problem still unresolved, proceed with the next solution.

D) Remove the adapter and reconnect.

There might be a problem with the connection between your device and the adapter. To fix the issue, try disconnecting the adapter from your device and reconnecting it.

Here’s how:

• Select Start  > Settings  > Devices   > Connected devices.
• Under Projectors, select the name of the Microsoft Wireless Display Adapter and select Remove device.
• Select Add a device to connect your device and the Microsoft Wireless Display Adapter.

If disconnecting and reconnecting the adapter doesn’t resolve the issue, proceed with the next solution.

E) Allow the adapter to communicate through Windows Firewall.

Windows Firewall might be preventing the adapter from connecting to your device. To allow the adapter to communicate through the firewall, do the following:

• In the search box in the taskbar, type allow firewall, and in the search results, select Allow an app through Windows Firewall.
• Under Name, find Wireless Display and make sure Private and Public are checked. Then, click OK.

Note: If you can’t select anything in the Allowed apps and features box, you aren’t logged in as an administrator. Select Change Settings, type your administrator password, and then select Yes. Your administrator password should be the same as the password you used to set up your device.

If your firewall is set to allow the adapter to communicate but you still can’t connect, proceed with the next solution.

F) Change the wireless frequency band on your device.

The Microsoft Wireless Display Adapter can communicate with devices on either the 2.4GHz or 5GHz wireless frequency bands, but you must have the 2.4GHz band enabled on your device when you’re pairing your device with the adapter.

If you still can’t connect your device to the adapter, the 2.4GHz band might be disabled.

Surface Pro, Surface Pro 2, and Surface 2 default to the 2.4GHz band and this can’t be changed.

Here’s how to enable the 2.4 GHz, or 5 GHz band:

• Right-click Start and select Device Manager.
• Click the chevron next to Network adapters, to collapse the section.
• Right-click your device’s network adapter. Select Properties > Advanced.

If you don’t see the Advanced tab, you’re not logged in as an administrator. Select Change Settings, enter your administrator password and select Yes. Your administrator password should be the same as the password you used to set up your device. Next, select Advanced.

• Under Property field, select Band.
• Under Value field, click the chevron for the drop-down menu and select Auto.
• Click OK.

If you still can’t connect, proceed with the next solution.

G) Reinstall the Intel HD Graphics driver.

uninstalling and reinstalling the graphics driver

• Select Start  > Settings  > Devices  > Connected devices.
• Select Add a device to connect your device and the Microsoft Wireless Display Adapter.

If you still can’t connect your device to your Microsoft Wireless Display Adapter, proceed with the next solution.

H) Uninstall and Reinstall the device Wi-Fi driver.

Refer to the TWC guide above. After you must have uninstalled the Wi-Fi driver, repeat the same step as above, to connect your device and the Microsoft Wireless Display Adapter.

After you have exhausted all these solutions given and you still can’t connect your device to your Microsoft Wireless Display Adapter, contact Microsoft Support.

Hope this helps!

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