Note: If you start to play a DVD or VCD in the Player Library, the Player automatically switches to Now Playing mode. The Blu-ray Disc format is not supported in Windows Media Player. To play a Blu-ray Disc, you need to use a non-Microsoft program that supports Blu-ray playback and a device capable of reading Blu-ray Discs.

Learn how the Photos app for Windows lets you view photos and videos from your PC alongside those from OneDrive, and keeps them organized by date, album, or folder.

In Office 2021, you'll find new co-authoring features, inking tools, data types, functions, translation and editing tools, motion graphics, ease-of-use features, and so much more!

如何将 IF 函数 (与 Excel 中) AND、OR 和 NOT 函数结合使用，以在给定值之间进行逻辑比较。

Learn how to get started with PowerPoint for the web from Office.com and create presentations online.

Erfahren Sie, wie Sie ein Installationsmedium für die Installation oder Neuinstallation von Windows 7, Windows 8.1 oder Windows 10 erstellen.

Learn how to improve the clarity of text and images displayed on your screen by changing the screen resolution of your monitor.

Whether it's for work or personal use, you can connect to a virtual private network (VPN) on your Windows PC. A VPN connection can help provide a more secure connection and access to your company's network and the internet, for example, when you’re working from a coffee shop or similar public place.

Explore OneDrive support, help, and learning resources. Learn how to protect your important files, documents, and memories with OneDrive.

Learn how to move files to a new Windows PC using an external storage device like a USB drive, SD, card, or external hard drive.