Windows Media Player 12 - Microsoft 支持
使用 Windows Media Player 12 播放更多格式的音乐和视频，并将它们流式传输到更多位置。 由 media 爱好者 for media 爱好者设计。 Windows Media Player 12（作为 Windows 7、Windows 8.1 和 Windows 10 的一部分提供*）可以播放比以往更多的音乐和视频 ...
Obtain a digital certificate and create a digital signature
This article explains how you can get or create a digital signature for use in Office documents. To learn more about how to use them in Office documents, see Add or remove a digital signature in Office files.. What is a digital signature?
适用于:
Microsoft 365 专属 Excel, Microsoft 365 专属 Word, Microsoft 365 专属 Outlook, Microsoft 365 专属 PowerPoint, Word 2021, Word 2019, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, Office 2016, Excel 2013, Word 2013, Outlook 2013, PowerPoint 2013, Office 2013
Windows 10 更新助手 - Microsoft 支持
此疑难解答将为计算机尚未更新至最新版本 Windows 10 版本 1607 的客户提供协助。 此更新最初只会发布给一小组有针对性的客户。 这些客户会随着时间的推移而扩展。 Windows 用户可以从本文启动助手。
Use the SUM function to sum numbers in a range
You can use a simple formula to sum numbers in a range (a group of cells), but the SUM function is easier to use when you’re working with more than a few numbers. For example =SUM(A2:A6) is less likely to have typing errors than =A2+A3+A4+A5+A6. Here’s a formula that uses two cell ranges: =SUM(A2:A4,C2:C3) sums the numbers in ranges A2:A4 and C2:C3.
适用于:
Microsoft 365 专属 Excel, Excel 网页版, Excel 2021, Excel 2019, Excel 2016
Excel video training - Microsoft Support
A list of Excel training, from entry level to advanced skills, plus templates and other resources.
适用于:
Microsoft 365 专属 Excel, Microsoft 365 Mac 版专属 Excel, Excel 网页版, Excel 2021, Excel 2021 for Mac, Excel 2019, Excel 2016
Pin, remove, and customize in Quick access - Microsoft Support
By default, File Explorer opens to Quick Access. You can set a folder to show up in Quick access so it'll be easy to find. Just right-click (or long-press) it and select Pin to Quick access. Unpin it when you don’t need it there anymore by right-clicking (or long-pressing) it and selecting Unpin from Quick access.. If you want to see only your pinned folders, you can turn off recent files or ...
Microsoft .NET Framework 4.8 offline installer for Windows
Download information. The following files are available for download from the .NET Download site: Download the Microsoft .NET Framework 4.8 offline installer package now.
Windows 中的用户帐户访问 - Microsoft 支持
登录到 Windows 是指验证身份以访问 Windows 设备的过程。 此过程有助于保护你的个人信息和设置免受未经授权的访问。 登录时，如果你设置了 Windows Hello，则可以使用密码、PIN 或生物识别数据（如指纹或面部识别）。
Ein Wiederherstellungslaufwerk erstellen - Microsoft-Support
Es empfiehlt sich, ein Wiederherstellungslaufwerk zu erstellen. Auf diese Weise können Sie das Wiederherstellungslaufwerk verwenden, um Windows 11 neu zu installieren, wenn auf Ihrem PC jemals ein größeres Problem auftritt, z. B. hardwarefehler.
Automatically fix Windows security issues - Microsoft Support
Follow these steps to automatically diagnose and repair Windows security problems by turning on UAC, DEP protection, Windows Firewall, and other Windows security options and features.