在 Windows 11 中使用相机设置管理相机 - Microsoft 支持
注意: “相机设置”页在 Windows 10 中不可用，但某些相机制造商可能会提供实用程序来修改相机设置。有关详细信息，请咨询相机制造商。
Sign in to Office - Microsoft Support
Learn how to sign in to Office or Microsoft 365 from a desktop application or your web browser.
Applies To:
Excel for Microsoft 365, Word for Microsoft 365, Outlook for Microsoft 365, PowerPoint for Microsoft 365, Access for Microsoft 365, OneNote for Microsoft 365, Project Online Desktop Client, Publisher for Microsoft 365, Visio Plan 2, Excel for Microsoft 365 for Mac, Word for Microsoft 365 for Mac, Outlook for Microsoft 365 for Mac, PowerPoint for Microsoft 365 for Mac, OneNote for Microsoft 365 for Mac, Excel for the web, Word for the web, OneNote for the web, PowerPoint for the web, Excel 2021, Word 2021, Outlook 2021, PowerPoint 2021, Access 2021, Project Professional 2021, Project Standard 2021, Publisher 2021, Visio Professional 2021, Visio Standard 2021, Excel 2021 for Mac, Word 2021 for Mac, Outlook 2021 for Mac, PowerPoint 2021 for Mac, OneNote 2021 for Mac, Office 2021 for Mac, Excel 2019, Word 2019, Outlook 2019, PowerPoint 2019, Access 2019, Project Professional 2019, Project Standard 2019, Publisher 2019, Visio Professional 2019, Visio Standard 2019, Excel 2019 for Mac, Word 2019 for Mac, Outlook 2019 for Mac, PowerPoint 2019 for Mac, OneNote 2019 for Mac, Office 2019 for Mac, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, Access 2016, OneNote 2016, Project Professional 2016, Project Standard 2016, Publisher 2016, Visio Professional 2016, Visio Standard 2016, OneNote for Mac, Microsoft 365 for home, Office for business, Office 365 Small Business, Microsoft 365 admin, Project Online, Microsoft 365 for Mac
Install the Language Accessory Packs for Office 2016
Install language accessory packs after installing Microsoft Office, to add additional display, help, or proofing tools. Install the language accessory pack for your desired language.
Count numbers or dates based on a condition - Microsoft Support
See examples of how to use worksheet functions to count numbers or dates that fall within a range in Excel.
Applies To:
Excel for Microsoft 365, Excel 2021, Excel 2019, Excel 2016
Accessing Credential Manager - Microsoft Support
Accessing Credential Manager. Credential Manager lets you view and delete your saved credentials for signing in to websites, connected applications, and networks.
获取最新 Windows 更新 - Microsoft 支持
Windows 设备可能会在不同时间获得新功能，因为 Microsoft 通过多种服务技术提供非安全更新、修补程序、改进和增强功能，包括受控功能推出 (CFR)。 如果你需要重启设备来完成更新，Windows 会通知你，你可以选择最适合你完成更新的时间。
Your CD or DVD drive is not recognized by Windows or other programs
This article describes a problem with CD or DVD drives not work, or is missing, or not recognized after installing or uninstalling programs.
Fix Wi-Fi connection issues in Windows - Microsoft Support
Learn about different things you can try to fix network connection problems in Windows.
获取 Windows 升级和安装错误的帮助 - Microsoft 支持
非 Microsoft 防病毒软件有时会导致升级问题，所以请在升级期间使用 Windows Defender 保护你的设备。 只要有安装介质和所有必需的激活信息，就可以在升级后随时重新安装该软件。
PC またはワイヤレス ディスプレイへのスクリーン ミラーリングと投影 - Microsoft サポート
Windows PC で作業していて、別のデバイスのアプリとコンテンツを PC の画面に表示する場合は、そのデバイスの画面をミラーリングするか、PC に投影します。