Find out why Microsoft collects your search history, how to view and clear your search history, and which search data appears on the privacy dashboard.

说明. round 函数将数字四舍五入到指定的位数。 例如，如果单元格 a1 包含 23.7825，而且您想要将此数值舍入到两个小数位数，可以使用以下公式： =round(a1, 2)

Learn how to add user accounts in Windows 10 and Windows 11. With an account, each person has separate files, browser favorites, and a private desktop.

Learn how to avoid "fake order" scams that try to trick you into paying for products you never ordered. Read this short article from Microsoft Support.

With Edge Chromium, you can add multiple profiles. Profiles allow multiple users to operate in a shared environment while maintaining access to their personalized browser settings, bookmarks, and extensions.

了解如何运行 Windows 更新疑难解答来解决下载或安装 Windows 更新时出现的错误。

Learn how to receive a refund or exchange for items purchased from Microsoft.

Windows 安全中心已预安装在 Windows 10 中并可随时使用。

了解如何使用 CONCATENATE 函数在 Excel 中连接文本字符串。 我们的分步指南可以轻松地将两个或多个文本字符串联接到一个文本字符串中。

Linking a GitHub account. GitHub identity support lets you use your existing GitHub account as a credential for a new or existing Microsoft account, linking your GitHub account with your Microsoft account.