Learn how you can free up drive space in Windows. Keep your PC running smoothly and up to date by increasing the disk space.

The new Microsoft Edge is based on Chromium and was released on January 15, 2020. It is compatible with all supported versions of Windows, and macOS. With speed, performance, best in class compatibility for websites and extensions, and built-in privacy and security features, it's the only browser you'll ever need.

请参阅一些最常见的升级和安装错误，了解Windows 10和Windows 11，以及可尝试修复的错误。 非 Microsoft 防病毒软件有时会导致升级问题，所以请在升级期间使用 Windows Defender 保护你的设备。

Learn about Windows 11 minimum system requirements and how to assess your upgrade eligibility.

If you see a gray OneDrive icon, this means you are not signed in. If you cannot sign in to your OneDrive sync app, or the sync app says OneDrive is not connected, follow the steps below.

获取有关如何在屏幕屏幕中更改屏幕亮度Windows。 选择任务栏右侧的操作中心，然后移动"亮度"滑块 以调整亮度。 (如果滑块不存在，请参阅下面的备注部分。) 某些电脑可能允许 Windows 根据当前照明条件自动调整屏幕亮度。

获取 Windows 操作系统的官方支持和帮助信息，以及如何使用 Windows 的指南。

Learn how to upgrade your existing device to Windows 10 or buy a new PC. Get answers to common questions about upgrading to Windows 10.

Learn how to find your Windows product key for activation or when to use a digital license instead.

Learn how to activate Office pre-installed on new Windows 10 PCs or with a new product key.