Look for key features of genuine Windows software, such as the Certificate of Authenticity (COA), a proof of license label, and an edge-to-edge hologram.

Get Microsoft billing support. Find help with Microsoft Store purchases, subscriptions, refunds, payment options, and checking your order history.

Find help and how-to articles for Windows operating systems. Get support for Windows and learn about installation, updates, privacy, security and more.

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

注意: 实时字幕在 Windows 11 版本 22H2 及更高版本中提供。 在运行 Windows 11 版本 24H2 及更高版本的 Copilot+ 电脑上 提供翻译功能。 有关 Windows 11 中的新功能的详细信息，请参阅 最近 Windows 更新中的新增功能。

学习如何在 Windows 中解决 USB-C 问题，修复 USB 设备、端口和适配器无法正常工作。

Как открыть приложение "Проверка работоспособности ПК" В Windows воспользуйтесь поиском на ...

Learn how to change your notification settings and quick actions using the notification center in Windows.

Play MP4 files in Windows 10 by right-clicking the file and choosing what application to open it with.

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.