Stay protected with Windows Security - Microsoft Support
Learn how to use antivirus protection in Windows Security to protect your Windows PC against malware, viruses, and other threats.
重新安装 Windows - Microsoft 支持
了解如何在电脑上重新安装 Windows，以及安装 Windows 后激活的工作原理。
屏幕镜像和投影到电脑或无线显示器 - Microsoft 支持
如果你正在使用 Windows 电脑，并且想要在电脑设备上显示来自其他屏幕的应用程序和内容，则需考虑将设备屏幕镜像或投影到 ...
Using email in Outlook on the web - Microsoft Support
Get help with signing in, changing passwords, creating and sending mail, deleting mail, creating folders, and more in Outlook on the web.
Applies To:
Outlook.com, Outlook on the web for Exchange Server 2016
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
Track my Microsoft Rewards orders - Microsoft Support
Sign in to account.microsoft.com, then select Order History on your Rewards page.
Find your IP address in Windows - Microsoft Support
Get info on how to find your IP address in Windows. Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.
How to change your keyboard layout - Microsoft Support
This article describes how to change keyboard layouts in Windows 7 and earlier versions of Windows.
Filter junk email and spam in Outlook - Microsoft Support
Learn how to block someone or add email addresses to the safe senders list in Outlook on the web.
Applies To:
Office for business, Office 365 Small Business, New Outlook for Windows, Outlook on the web for Exchange Server 2016, Outlook on the web for Exchange Server 2019
Pin, remove, and customize in Quick access - Microsoft Support
Pin, remove, and customize in Quick access. 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.