Device encryption in Windows - Microsoft Support
Device encryption helps protect your data and it's available on a wide range of Windows devices.
Use Smart charging in Windows - Microsoft Support
Learn how Smart charging in Windows can help your battery last longer over time.
在 Excel 中将 IF 与 AND、OR 和 NOT 函数配合使用 - Microsoft 支持
如何将 IF 函数 (与 Excel 中) AND、OR 和 NOT 函数结合使用，以在给定值之间进行逻辑比较。
Applies To:
Excel for Microsoft 365, Excel for Microsoft 365 for Mac, Excel for the web, Excel 2021, Excel 2021 for Mac, Excel 2019, Excel 2019 for Mac, Excel 2016, Excel Web App, Excel for Windows Phone 10
Upgrade to Windows 10: FAQ - Microsoft Support
Learn how to upgrade your existing device to Windows 10 or buy a new PC. Get answers to common questions about upgrading to Windows 10.
PC Game Pass FAQ | Xbox Support
Get answers to common questions about the PC Game Pass subscription.
Connect Surface to a TV, monitor, or projector - Microsoft Support
Connect your Surface on Windows 10 to a TV, external display, or projector by using the Surface HD Digital AV Adapter or the Surface VGA Adapter.
Enable or disable macros in Microsoft 365 files
Improve security, evaluate and mitigate the risks of running macros, and see how to enable or disable macros for Microsoft 365.
Applies To:
Excel for Microsoft 365, Word for Microsoft 365, Outlook for Microsoft 365, PowerPoint for Microsoft 365, Access for Microsoft 365, Excel 2021, Word 2021, Outlook 2021, PowerPoint 2021, Access 2021, Visio Professional 2021, Visio Standard 2021, Excel 2019, Word 2019, Outlook 2019, PowerPoint 2019, Access 2019, Visio Professional 2019, Visio Standard 2019, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, Access 2016, Visio Professional 2016, Visio Standard 2016
欢迎使用 Windows
获取 Windows 操作系统的官方支持和帮助信息，以及如何使用 Windows 的指南。
How to get and use app passwords - Microsoft Support
Learn how to sign in and create app passwords for Microsoft apps and devices that don't support two-step verification.
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.