激活 Microsoft 365 或非订阅版本的 Office 当启动未激活的 Microsoft 365 应用时，系统将提示登录到 Microsoft 365。 请务必使用用于购买或订阅 Microsoft 365 的 Microsoft 帐户或工作或学校帐户进行登录。

Find out how the Windows location service works and how to change the location privacy settings.

Learn how to get Microsoft account help, troubleshoot sign in issues, keep your account secure, and manage your Microsoft account dashboard.

IF 语句非常强大，其构成了许多电子表格模型的基础，但也是导致许多电子表格问题的根本原因。 理想情况下，IF 语句应适用于最小条件（例如 Male/Female 和 Yes/No/Maybe），但是对更复杂情况求值时则需要同时嵌套* 3 个以上的 IF 函数。

了解如何从 Windows 10 家庭版升级到 Windows 10 专业版或从 Windows 11 家庭版升级到 Windows 11 专业版，包括如何使用有效产品密钥或 Microsoft Store。

Using System File Checker in Windows. System File Checker is a utility in Windows that checks for problems with files on your computer. To run it, follow these steps: Make sure you've installed the latest updates for Windows, and then restart your machine. To find out more, read Update Windows. In the search box on the taskbar, type command ...

Sign in to SharePoint SharePoint is a browser-based app that you connect to through your web browser, like so: Go to office.com, and sign in to your work or school account. In the upper left corner of the window, select the app launcher > All apps > SharePoint Tip: If you don't see the SharePoint app under All apps, use the Search box near the top of the window to search for SharePoint.

Internet Explorer 11 support ended on June 15, 2022. We recommend you use Microsoft Edge for a faster, more secure and more modern web browsing experience.

In Windows, having a camera and microphone as part of your device lets you make Teams video calls, take pictures, record videos, and more. Many apps and services request and use the camera or microphone, and Windows settings give you control over which apps can use your camera or microphone.

Learn how to use Xbox cloud gaming on various devices including Android, iOS, and Windows with this comprehensive guide.