下载并安装或重新安装 Office 2019、Office 2016 或 Office 2013
注意: 如果是通过以下任一方式获取的 Microsoft 365：Microsoft 工作区折扣计划(以前称为家用许可计划)，则安装 2019、2016 或 2013 版的 Office 专业增强版、Office 标准版或独立应用（如 Word 或 Project）的步骤可能会有所不同：如果你通过公司购买了 Microsoft 365 供个人使用，请参阅通过工作场所折扣计划安装 ...
适用于:
Office 2019, Office 2016, Office 2016 for Mac, Office 2013
视频：登录或创建 OneDrive (个人) 帐户 - Microsoft 支持
培训：在 onedrive.com 上登录或创建账户，开始使用 Micorsoft OneDrive。 观看此在线培训视频，了解如何操作。
适用于:
OneDrive (家庭或个人), OneDrive for Mac, Windows 版 OneDrive
Windows sign-in options and account protection - Microsoft Support
To turn on Windows Hello. Go to Start > Settings > Accounts > Sign-in options. Select the Windows Hello method that you want to set up, Select Set up. If you don't see Windows Hello in Sign-in options, then it may not be available for your device. Windows Hello does require a compatible camera or fingerprint reader.
PowerPoint 支持的视频和音频文件格式 - Microsoft 支持
建议的格式. 视频 ：.mp4 使用 H.264 视频和 AAC 音频编码的文件. 音频 ：.m4a使用 AAC 音频编码的文件. 这些名称和格式听起来可能很复杂，但你可以轻松地转换为并使用这些格式，而无需知道除名称以外的任何内容。.
适用于:
Microsoft 365 专属 PowerPoint, Microsoft 365 Mac 版专属 PowerPoint, PowerPoint 2021, PowerPoint 2021 for Mac, PowerPoint 2019, PowerPoint 2019 for Mac, PowerPoint 2016, PowerPoint 2013, PowerPoint for iPad, PowerPoint for iPhone, PowerPoint for Android 平板电脑版, PowerPoint for Android 手机版, PowerPoint for Windows Phone 10, PowerPoint Mobile
Download and install or reinstall Office 2019, Office 2016, or Office ...
Note: The steps to install the 2019, 2016, or 2013 versions of Office Professional Plus, Office Standard, or a stand-alone app such as Word or Project might be different if you got Microsoft 365 through one of the following: Microsoft Workplace Discount Program (formerly known as Home Use Program): If you bought Microsoft 365 for personal use through your company, see Install Office through ...
适用于:
Office 2019, Office 2016, Office 2016 for Mac, Office 2013
Redeem a gift card or code to your Microsoft account
How to redeem a Windows activation code. On your Windows PC, go to the Activation section of the Settings app and select Change product key. Open Settings. Problems redeeming a code? If you're unable to redeem a code, check our self-help troubleshooting guidance below. Get help. Need more help?
适用于:
Microsoft 帐户仪表板
Fix USB-C problems in Windows - Microsoft Support
Open USB settings. Turn Connection notifications on or off. Note: If you're having trouble downloading photos, see Import photos and videos from phone to PC. Here are some USB-C notifications you might receive if there’s a problem: USB4 device functionality might be limited. USB device not recognized. Slow charger. PC isn't charging.
PowerPoint 不能从所选文件插入视频 - Microsoft 支持
PowerPoint视频未在辅助显示器上播放. 尝试插入 MPEG-4 或 QuickTime 电影文件时，出现错误消息：“PowerPoint 不能从所选文件插入视频”. 尝试插入 MPEG-2 视频时，出现“PowerPoint 不能从所选文件插入视频”的错误. 尝试插入 MPEG-4 或 QuickTime 电影文件时，出现错误消息 ...
适用于:
Microsoft 365 专属 PowerPoint, PowerPoint 2021, PowerPoint 2019, PowerPoint 2016, PowerPoint 2013
How to use the PC Health Check app - Microsoft Support
How to open PC Health Check. In Windows, use Search on the taskbar to search for “PC Health Check,” then select it from the list of results. If a PC Health Check update is available, you can quickly install it for the latest version.