Microsoft Teams 的屏幕共享功能^{(Microsoft Teams’ screen sharing feature)}允许您与会议参与者共享设备的屏幕。如果您在演示屏幕时遇到问题或在尝试演示时在会议中看到黑屏，则您的设备或应用程序可能存在问题。以下是您的问题的可能解决方案。

无法共享屏幕的部分原因包括，并非每个人都可以在当前会议中共享屏幕、Teams在您的^(Teams)Mac上没有屏幕共享权限、您的 Internet 连接速度不够快，或者Teams的缓存腐败的。

1. 让每个人在团队会议中^{(Your Teams Meeting)}展示他们的屏幕^{(Everyone Present Their Screen)}

Teams 允许会议管理员选择谁可以在会议中展示其屏幕。^{(who can present their screen)}如果您的会议管理员已为所有人禁用屏幕共享，这可能就是您无法与其他人共享屏幕的原因。

您可以要求管理员按照以下步骤修复该问题：

1. 选择^(Select)Teams会议屏幕顶部的更多。
2. Choose Settings > Meeting在菜单中 选择“设置”>“会议选项”。
3. 选择谁可以演示？并选择所有人^(Everyone)。然后，选择保存^(Save)。

2.允许团队^(Teams)共享您的Mac屏幕^{(Your Mac Screen)}

如果您在Mac^(Mac)上使用Teams，则必须允许该应用从 macOS 设置共享您的屏幕^{(share your screen from your macOS settings)}。完成此操作后，Teams将获得对您屏幕的完全访问权限。

1. 选择左上角的Apple菜单，然后选择^(Apple)“系统^(System) 偏好设置”^{(Preferences)}。
2. ^{(Select Security)}在以下面板上 选择安全和隐私。^(Privacy)
3. 选择“隐私”^(Privacy)选项卡，然后选择“屏幕录制”^{(Screen Recording)}选项。
4. 打开右侧 Microsoft Teams的复选框。^{(Microsoft Teams)}

3. 确保您的互联网^(Internet)连接足够快^{(Fast Enough)}

屏幕共享需要比正常互联网使用更高的互联网带宽。您的互联网速度应该足够快，以便您可以在在线会议中展示您的屏幕。

您可以访问Fast.com等网站来^(Fast.com)检查连接速度^{(check the speed of your connection)}。该网站会告诉您您的互联网速度，让您决定是否应该升级当前的计划以获得更高的速度。

4. 关闭使用^(Using)互联网数据的^{(Internet Data)}活动^(Activities)

无法在Teams会议中顺利共享屏幕的一个可能原因是计算机的其他应用和活动正在耗尽您的互联网带宽。这使得Teams 的^(Teams)工作带宽很少，从而导致各种问题。

您可以通过关闭所有使用互联网连接的应用程序来解决此问题。您可以找到所有打开的应用程序的列表，甚至可以强制它们在 Windows 10/11 和Mac计算机上^(Mac)关闭^{(force them to close)}。

在 Windows 上

1. 右键单击^{(Right-click)}“开始^(Start)”菜单图标并选择“任务管理器”^{(Task Manager)}。
2. 选择“进程”^(Processes)选项卡，找到要关闭的应用程序，右键单击该应用程序，然后选择“结束^(End)任务”。

在苹果机上

1. 按键盘上的 Option + Command + Esc
2. 在列表中选择要关闭的应用程序，然后选择“强制退出”^{(Force Quit)}。

5. 在Google Chrome^{(Google Chrome)}或Microsoft Edge中使用 Microsoft Teams

如果你尝试在Microsoft Teams 的网络版^{(web version of Microsoft Teams)}而不是桌面应用程序中共享屏幕，请确保使用稳定的网络浏览器，例如Google Chrome或Microsoft Edge。这些浏览器往往与Teams^(Teams)配合良好，允许您展示屏幕并使用各种其他应用程序功能。

您可以轻松地从当前的网络浏览器（例如Firefox）切换到Chrome或Edge，然后开始向所有人展示您的屏幕。

6.删除Microsoft Teams的应用程序缓存

与所有其他应用程序一样，Teams应用程序将缓存文件存储在您的计算机上，以提高应用程序的使用率。这些文件可能会损坏，导致应用程序不稳定。

您的屏幕共享无法正常工作的问题可能是由于Teams^(Teams)缓存错误造成的。在这种情况下，您可以清除应用程序的缓存文件^{(clear the app’s cache files)}并解决您的问题。好消息是删除缓存不会删除应用程序中的任何文件。

在 Windows 上

1. 如果你已在电脑上运行该应用， 请关闭Teams 。
2. 按Windows + R启动“运行”^(Run)对话框。
3. 在框中键入以下内容并按 Enter：%appdata%MicrosoftTeams

1. ^(Select)按Ctrl + A 选择文件资源管理器^{(File Explorer)}窗口中显示的所有文件。
2. ^(Delete)通过选择顶部的垃圾桶图标来删除选定的文件。

1. 重新启动^(Reboot)电脑并启动Teams应用程序。

在苹果机上

1. ^{(Quit Teams)}如果应用程序已在您的Mac计算机上运行，^(Mac)​​请退出 Teams。
2. Select Go > Go在Finder窗口中^(Finder)选择“前往”>“前往文件夹”^(Folder)，输入以下路径，然后按 Enter：~/Library/Application Support/Microsoft/Teams
   
3. 通过将所有项目拖放到垃圾桶中来删除^(Delete)文件夹的所有内容。
4. 启动Keychain Access，找到所有Microsoft Teams条目，然后删除所有这些条目。

7.降低Windows或Mac屏幕分辨率^{(Mac Screen Resolution)}

当您在Teams^(Teams)会议中与其他人共享屏幕时遇到问题时，请考虑降低屏幕分辨率^{(lowering your screen resolution)}。这使得Teams使用更少的资源，从而增加了在会议中成功展示屏幕的机会。

稍后，您可以返回到原始屏幕分辨率。

在 Windows 上

1. 按Windows + I 打开“设置”。
2. 在左侧边栏中选择系统。
3. 选择右侧窗格中的“显示”。

1. 选择显示^(Display)分辨率下拉菜单并选择较低的分辨率。

1. 参加您的Teams会议并尝试展示您的屏幕。

在苹果机上

1. 转至Mac上的系统^(System) 偏好设置^{(Preferences)}。
2. ^{(Select Display)}在下一页中 选择“显示” 。
3. 在“分辨率”^(Resolution)菜单中选择“缩放”^(Scaled)选项。
4. 选择低于当前分辨率的分辨率。

8. 更新您的显示驱动程序

您的显示驱动程序^(drivers)定义了屏幕内容的呈现方式。如果这些驱动程序已损坏或过时，这可能就是您无法在Teams中显示屏幕的原因。您可以通过将有问题的驱动程序更新^{(updating your faulty drivers)}到最新版本来解决此问题。

1. 右键单击“开始^(Start)”菜单图标并选择“设备^{(Device Manager)}管理器”，打开“设备管理器”^{(Device Manager)}。
2. 展开显示^{(Expand Display)}适配器，右键单击您的适配器，然后选择更新^(Update)驱动程序。

1. 选择^{(Select Search)}自动搜索驱动程序并安装可用的驱动程序。
2. 如果设备管理器^{(Device Manager)}找不到新驱动程序，请选择“在Windows 更新^{(Windows Update)}上搜索^(Search)更新的驱动程序” 。此选项将使用Windows 更新^{(Windows Update)}来查找适用于您的图形适配器的更新驱动程序。

9. 更新 Microsoft Teams

最后但并非最不重要的一点是，您应该在 Windows 或Mac计算机上运行最新版本的^(Mac)Microsoft Teams。这是因为较旧的应用程序版本存在问题，而新版本已修复这些问题。

您可以更新应用程序^{(update the app)}来解决您的问题，并可能获得新功能。

1. 在 Windows 或Mac计算机上打开Microsoft Teams。
2. 选择页面顶部的三个点。
3. ^{(Choose Check)}在菜单中选择检查更新。

1. 允许应用程序下载并安装可用更新。

在Windows^(Windows)和Mac上的Microsoft Teams中正常^{(Screen Without Issues)}显示屏幕

屏幕共享在许多类型的会议中都至关重要。如果您在MS Teams^{(MS Teams)}中执行此操作时遇到问题，您的问题可能与您的应用程序或计算机有关。上面的指南列出了一些可能的解决方案来帮助您解决问题。

修复导致问题的项目后，您可以开始在所有 Teams 会议中显示您的屏幕^{(start displaying your screen in all your Teams meetings)}。享受！

Screen Sharing Not Working in Microsoft Teams? 9 Fixes to Try

Microsoft Teams’ screen sharing feature allows you to share your device’s screen with your meeting participants. If you have trouble presenting your screen or see a black screen in the meeting while trying to present, your device or app may have an issue. Here are the possible solutions to your problem.

Some reasons you can’t share your screen are that not everyone is allowed to share the screen in your current meeting, Teams doesn’t have screen-sharing permission on your Mac, your internet connection isn’t fast enough, or Teams’ cache is corrupt.

1. Let Everyone Present Their Screen in Your Teams Meeting

Teams allows the meeting admin to choose who can present their screen in a meeting. If your meeting admin has disabled screen sharing for everyone, that may be why you can’t share your screen with others.

You can ask the admin to fix that by following the following steps:

1. Select More at the top of a Teams meeting screen.
2. Choose Settings > Meeting options in the menu.
3. Select Who can present? and choose Everyone. Then, select Save.

2. Allow Teams to Share Your Mac Screen

If you’re using Teams on a Mac, you’ll have to allow the app to share your screen from your macOS settings. Once you’ve done that, Teams will be granted full access to your screen.

1. Select the Apple menu in the top-left corner and choose System Preferences.
2. Select Security & Privacy on the following panel.
3. Choose the Privacy tab and select the Screen Recording option.
4. Turn on the checkbox for Microsoft Teams on the right.

3. Make Sure Your Internet Connection Is Fast Enough

Screen sharing requires higher internet bandwidth than normal internet usage. Your internet speed should be fast enough to allow you to present your screen in your online meetings.

You can check the speed of your connection by heading to a site like Fast.com. The site will tell you your internet speed, letting you decide if you should upgrade your current plan to get higher speeds.

4. Close the Activities Using Your Internet Data

One possible reason you can’t smoothly share your screen in your Teams meetings is that your computer’s other apps and activities are using up your internet bandwidth. This leaves Teams with little bandwidth to work, leading to various issues.

You can fix this issue by closing all your apps that utilize your internet connection. You can find a list of all your open apps and even force them to close on your Windows 10/11 and Mac machines.

On Windows

1. Right-click the Start menu icon and choose Task Manager.
2. Select the Processes tab, find the app to close, right-click the app, and choose End task.

On Mac

1. Press Option + Command + Esc on your keyboard.
2. Select the app to close on the list and choose Force Quit.

5. Use Microsoft Teams in Google Chrome or Microsoft Edge

If you’re trying to share your screen in the web version of Microsoft Teams and not in the desktop app, make sure to use a stable web browser like Google Chrome or Microsoft Edge. These browsers tend to work well with Teams, allowing you to present your screen and use various other app functions.

You can easily switch from your current web browser (like Firefox) to Chrome or Edge, and then start presenting your screen to everyone.

6. Delete Microsoft Teams’ App Cache

Like all other apps, the Teams application stores cache files on your computer to improve your app usage. These files can go corrupt, rendering the app unstable.

Your screen sharing not working issue may have resulted from a bad Teams cache. In this case, you can clear the app’s cache files and resolve your issue. The good news is deleting the cache doesn’t delete any of your files in the app.

On Windows

1. Close Teams if you’re already running the app on your PC.
2. Launch the Run dialog box by pressing Windows + R.
3. Type the following in the box and press Enter: %appdata%\Microsoft\Teams

1. Select all the files displayed on your File Explorer window by pressing Ctrl + A.
2. Delete the selected files by selecting the trash can icon at the top.

1. Reboot your PC and launch the Teams app.

On Mac

1. Quit Teams if the app is already running on your Mac machine.
2. Select Go > Go to Folder in a Finder window, enter the following path, and press Enter:
   ~/Library/Application Support/Microsoft/Teams
3. Delete all the contents of the folder by dragging and dropping all the items onto the trash can.
4. Launch Keychain Access, find all Microsoft Teams entries, and delete all those entries.

7. Lower Your Windows or Mac Screen Resolution

Consider lowering your screen resolution when you have trouble sharing your screen with others in your Teams meeting. This makes Teams use fewer resources, increasing the chances of successfully presenting your screen in your meeting.

Later, you can go back to the original screen resolution.

On Windows

1. Open Settings by pressing Windows + I.
2. Select System in the left sidebar.
3. Choose Display on the right pane.

1. Select the Display resolution drop-down menu and choose a lower resolution.

1. Attend your Teams meeting and try to present your screen.

On Mac

1. Go to System Preferences on your Mac.
2. Select Display on the following page.
3. Choose the Scaled option in the Resolution menu.
4. Select a resolution that’s lower than the current one.

8. Update Your Display Drivers

Your display drivers define how your screen content is rendered. If these drivers are corrupt or outdated, that may be why you can’t present your screen in Teams. You can fix this by updating your faulty drivers to the latest version.

1. Open Device Manager by right-clicking the Start menu icon and choosing Device Manager.
2. Expand Display adapters, right-click your adapter, and choose Update driver.

1. Select Search automatically for drivers and install the available drivers.
2. If Device Manager can’t find new drivers, select Search for updated drivers on Windows Update. This option will use Windows Update to find newer drivers for your graphics adapter.

9. Update Microsoft Teams

Last but not least, you should be running the latest version of Microsoft Teams on your Windows or Mac computer. This is because older app versions have issues that are patched in newer versions.

You can update the app to fix your issue and possibly get new features.

1. Open Microsoft Teams on your Windows or Mac machine.
2. Select the three dots at the top of the page.
3. Choose Check for updates in the menu.

1. Allow the app to download and install the available updates.

Present Screen Without Issues in Microsoft Teams on Windows and Mac

Screen sharing is essential in many kinds of meetings. If you’re experiencing issues doing that in MS Teams, your problem may be related to your app or your computer. The guide above lists some possible solutions to help you resolve your issue.

Once you’ve fixed the item causing the issue, you can start displaying your screen in all your Teams meetings. Enjoy!

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