Learn how to use the Activation troubleshooter to resolve common activation issues in Windows.

You can refer to the contents of cells in another workbook by creating an external reference formula. An external reference (also called a link) is a reference to a cell or range on a worksheet in another Excel workbook, or a reference to a defined name in another workbook.

Training: Get started with SharePoint in Microsoft 365. At office.com, sign in to SharePoint, then select the SharePoint tile.

了解如何使用 Windows 11 中的任务栏功能。 使用任务栏设置隐藏任务栏、固定应用、更改位置等。

Learn how to use eye control in Windows to type with an on-screen keyboard, communicate with people, and control the mouse with your eyes.

Get started with news and interests, choose how weather looks on your taskbar, turn it on and off, personalize your feed and choose interests and followed publishers.

Get help when Windows can't find the camera

Learn how to extend your PC's battery life using battery saver and other power-saving tips for Windows.

Learn how to manage background activity for apps to help save battery power in Windows.

Obtener información sobre las opciones de recuperación en Windows. Obtén información sobre cómo restablecer tu PC, volver a una versión anterior de Windows o usar un soporte físico para volver a instalar Windows.