了解如何为你的打印机安装最新驱动程序。 如果最近升级了 Windows，你的打印机驱动程序可能需要重新安装。

This article describes the formula syntax and usage of the ROUNDUP function in Microsoft Excel.. Description. Rounds a number up, away from 0 (zero). Syntax. ROUNDUP(number, num_digits)

Learn how to control your PC by voice using Windows Speech Recognition commands for dictation, keyboard shortcuts, punctuation, apps, and more.

重要: Microsoft不再支持超过一年的 Authenticator 版本。始终使设备保持最新状态。

Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.

Summary. When you start your computer successfully, the Windows Registry Checker tool (Scanreg.exe) creates a backup of system files and registry configuration information (including user account information, protocol bindings, software program settings, and user preferences) once daily.

如果你在下载和安装 Windows 更新时收到错误代码，更新疑难解答可以帮助解决该问题。 选择“开始 ”>“设置 ”>“系统 ”>“疑难解答 ”>“其他疑难解答”。 接下来，在 最常用的下，选择 Windows 更新 > 运行。. 运行完疑难解答后，最好重启设备。

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Get answers to frequently asked questions about using the OneDrive desktop app for earlier versions of Windows. OneDrive is built in to Windows 10 so there is no need for a desktop app.

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