Learn how to change your account picture in Windows. Choose from pictures on your PC or take a new selfie.

了解 Windows 中的智能充电如何帮助电池持续更长时间。

Important: Reactions are only available to individuals using a work or school account in Outlook with a qualifying Microsoft 365 subscription.

将Outlook for Mac设置为我的默认电子邮件帐户。

Learn how to view and delete your browser history and other history in Microsoft Edge.

Découvrez comment réinitialiser ou modifier votre mot de passe compte Microsoft. Obtenez de l’aide avec un mot de passe de compte Microsoft oublié.

Notes about this update. When this update is installed, Windows may attempt to download and install feature updates to your device if it is approaching or has reached the end of support for your currently installed Windows version.

See what's new in recent Windows 10 and Windows 11 updates, including a chat from the taskbar, widgets, snap groups, and more.

When you create a presentation and then save it as a PowerPoint template (.potx) file, you can share it with your colleagues and reuse it again.

如果公式中包含具有不同数据类型（文本和数值）的单元格，Excel 会显示 #VALUE! 错误。 如果 公式引用的一个或多个单元格中包含文本，而不是数字，并且使用标准数学运算符（+、-、* 和 /）对不同数据类型执行加减乘除运算，则也会显示 #VALUE! 错误。