Learn how to get your Xbox device serviced.

本文介绍如何在 Windows 8.1、Windows 8、Windows 7 或 Windows Vista 中使用系统文件检查器工具来解决丢失或损坏的系统文件的问题。

The Program Install and Uninstall troubleshooter helps you automatically repair issues when you're blocked from installing or removing programs.

Office add-ins can help you personalize your documents or speed up the way you access information on the web. For example, with an add-in you could look up items on Wikipedia or add an online map to your document without having to leave Excel.

Outlook 网页版是组织使用的基于 Web 的 Outlook 版本。你需要使用工作或学校帐户登录才能访问此基于 Web 的 Outlook 版本。 你的工作或学校帐户通常由组织中的某人分配给你。

Microsoft doesn't make or support Outlook Express anymore. But the Mail Migration add-on can help you move your email and contacts over to Outlook.com. The add-on automatically moves your email and contacts, and you can keep your current email address.

Find out how to submit a request for a refund for a purchase of digital Xbox content.

若要在Windows 11中打开文件资源管理器，请在任务栏上选择“文件资源管理器 ”或按键盘上的 Windows 徽标键 + E。. 如果无法打开文件资源管理器，下面是一些可以尝试的方法。

The first time you use the DirectX Diagnostic Tool, you might be asked whether you want to check if your drivers are digitally signed. We recommend that you select Yes to help ensure that your drivers have been signed by a publisher that has verified their authenticity.

Add names to a contact group (distribution list). Use a contact group (formerly called a “distribution list”) to send an email to multiple people—a project team, a committee, or even just a group of friends—without having to add each name each time you want to send them an email message.