Learn how to check for, download, and install KB 2919355, an update for Windows 8.1 and Windows RT 8.1.

Learn how to get your Xbox device serviced. Important Send in your device as soon as possible. If you don’t ship your device within 30 days of your request, your service order will be canceled, and the shipping label will no longer be valid.

为 Windows 10 创建 ISO 文件. 与以前版本的 Windows 不同的是，你需要使用媒体创建工具来创建用于安装 Windows 10 的 ISO 文件。

Review the warranty terms, check your warranty status, and learn about the protection plans for your Microsoft device or accessory.

Learn how to troubleshoot Miracast connections and fix problems connecting to a wireless display or dock in Windows.

After you've invited people to your meeting, you can add up to 10 co-organizers to help manage your meeting. Co-organizers are displayed as additional organizers in the meeting participant list and have most of the capabilities of the meeting organizer.

Learn how you can use different Microsoft accounts and account profiles side by side.

Describes how to use the clean boot process to troubleshoot a problem in Windows 8.1, Windows 8, Windows 7, or Windows Vista.

如果在电脑上安装或更新游戏服务时遇到问题，或者你注意到电脑版 Xbox 应用启动时缺少内容，则可能需要下载并运行适用于电脑的游戏服务修复工具。

Learn how to create and assign category tags or labels in Outlook on the web.