How to go passwordless with your Microsoft account
Learn how to remove passwords from your Microsoft account to increase security.
Applies To:
Microsoft account dashboard
电话链接要求和设置 - Microsoft 支持
系统要求. 手机连接 体验从 Windows 电脑和 手机连接 开始。 从电脑中，可以使用预安装在设备上的连接至 Windows 应用或从 Google Play 或 Samsung Galaxy Store 下载的应用连接到选择 Android、Samsung、HONOR、OPPO 和华硕设备。
启动演示文稿，并在演示者视图中查看备注 - Microsoft 支持
在 Smartphone 上可使用 PowerPoint 作为远程控制，以运行演示文稿并查看演讲者注释。 有关详细信息（包括简短视频），请参阅在 PowerPoint 中进行演示时，在 Smartphone 上使用激光笔。. 切换演示者视图和幻灯片视图显示器
Applies To:
PowerPoint for Microsoft 365, PowerPoint for Microsoft 365 for Mac, PowerPoint 2021, PowerPoint 2021 for Mac, PowerPoint 2019, PowerPoint 2019 for Mac, PowerPoint 2016
向幻灯片添加水印 - Microsoft 支持
试一试！ 在 PowerPoint 中，可以在幻灯片中放置文本背景以获取该水印效果。 若要向所有幻灯片添加水印，选择“视图”>“幻灯片母版”。滚动到左侧缩略图窗格的顶部，选择第一项“幻灯片母版”。
Applies To:
PowerPoint for Microsoft 365, PowerPoint 2021, PowerPoint 2019, PowerPoint 2016
App permissions - Microsoft Support
Learn how to locate and manage your app permissions on Windows devices. Some apps or games need specific permissions to work properly.
使用 SUM 函数对区域中的数字求和 - Microsoft 支持
可以使用 简单的公式对) 一组单元格 (区域中的数字求和，但在处理多个数字时 ，sum 函数 更易于使用。 例如，=sum (a2：a6) 出现键入错误的可能性小于 =a2+a3+a4+a5+a6。 下面是使用两个单元格区域的公式： =sum (a2：a4，c2：c3) 对区域 a2：a4 和 c2：c3 中的数字求和。 可按 enter 获取总计 39787。
Applies To:
Excel for Microsoft 365, Excel for the web, Excel 2021, Excel 2019, Excel 2016
Set up the Outlook app for iOS - Microsoft Support
Add your Outlook.com, Microsoft 365, or Exchange-based email account to your iPhone, iPad, or iPod Touch using Outlook for iOS.
Applies To:
Outlook for Microsoft 365, Outlook for Microsoft 365 for Mac, Outlook 2021, Outlook 2021 for Mac, Outlook 2019, Outlook 2019 for Mac, Outlook 2016, Microsoft 365 for home, Office for business, Office 365 Small Business, Microsoft 365 admin, Outlook.com, New Outlook for Windows, Outlook for iOS
Microsoft Teams (free) - Microsoft Support
Get started with Microsoft Teams (free). Explore your options, find out what’s new, browse help topics, and more.
Applies To:
Microsoft Teams, Microsoft Teams personal, Microsoft Teams small business
加入 Teams 会议 - Microsoft 支持
加入 Teams 会议 视频; Teams 会议提示 视频; 立即开会 视频; 管理会议 视频; 安排网络研讨会 视频; 添加问答A 到网络研讨会和会议
Applies To:
Microsoft Teams
Sync files with OneDrive in Windows - Microsoft Support
Learn how to install and use OneDrive to sync files between your Windows device and the cloud.
Applies To:
OneDrive for Business, SharePoint Server Subscription Edition, SharePoint Server 2019, SharePoint in Microsoft 365, Office for business, Microsoft 365 admin, Office 365 operated by 21Vianet, Office 365 operated by 21Vianet - Admin, OneDrive (work or school), OneDrive (home or personal), OneDrive (work or school) operated by 21Vianet, OneDrive for Windows, SharePoint admin center, SharePoint in Microsoft 365 Small Business, SharePoint operated by 21Vianet