Learn more about what background apps are in Windows and how to turn them off when you're not using them.

Learn how defragmentation can reduce computer performance and what to do about it.

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.

使用 Windows 中的“设置”应用通过蓝牙发送文件。

Узнайте о параметрах восстановления в Windows. Узнайте, как вернуть компьютер в исходное состояние, вернуться к предыдущей версии Windows или переустановить Windows с носителя.

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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.

Find Microsoft Excel help and learning resources. Explore how-to articles, guides, training videos, and tips to efficiently use Excel.

Find help and how-to articles for Windows operating systems, including installation, updates, privacy, security and more.

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