另请参阅. 我无法从 Microsoft Store 找到或安装应用. 需要更多帮助吗？ 请联系支持人员. 有关技术支持，请转到联系Microsoft 支持，输入问题并选择“获取帮助”。 如果仍然需要帮助，请选择“联系支持人员”以转至最佳支持选项。

更改显示名称. 无论何时登录到你的帐户，你都可以使用显示名称。 你还将在已使用 Microsoft 帐户登录的任何 Windows 设备上看到它，它是用户在发送电子邮件或参与 Outlook.com 组时看到的名称。

Training: Learn how to get up and productive quickly with this Microsoft Teams Quick Start. Sign in to Teams, select Teams and Channels, reply to conversation threads, @mention someone, use emojis and stickers, and ask T-Bot questions.

在 Windows 8.1 或 Windows RT 8.1 中查找操作系统信息. 要查找设备运行的 Windows 版本，请按 Windows 徽标键 键 + R，并在“打开”框中键入“winver”，然后选择“确定”。. 如果你的设备运行的是 Windows 8.1 或 Windows RT 8.1，那么有关详细信息，可以参阅以下内容：

Learn how to tell if your Office software is genuine. To help determine if your Microsoft software is genuine, go to our How to Tell site for more information. Here you'll learn about authentic packaging, including what to look for with product key labels, and Certificate of Authenticity (COA), how to report counterfeit software, and find out what your shopping and licensing options are.

Efficiency mode What is efficiency mode in Microsoft Edge? Efficiency mode is designed to help extend battery life. It minimizes power usage by reducing resource usage through modifying background tab activity and some foreground activity, as well as putting inactive background tabs to sleep after 30 minutes or less of inactivity (if Save resources with sleeping tabs is on).

Press and hold (or right-click) the MP4 file you want to play, select Open with, and then choose your preferred file player from the list of applications.

如果你和其他用户同时尝试编辑页面的同一部分（例如更改同一段落的备注），通常会显示版本冲突消息。 发生这种情况时， OneNote 创建页面的多个副本以避免数据丢失，黄色的信息栏上会显示一条错误消息。

可以，但由于 Android 设备一次仅支持使用一个启动器，因此在启动器之间来回切换没有简单的方法。 不过，请放心，你以前的启动器仍可访问，因此你可以自由探索 Microsoft Launcher 所提供的功能，而不必担心丢失旧信息。

Equation Editor (Microsoft Equation 3.0) was included in earlier versions of Word, but was removed from all versions in the January 2018 Public Update (PU) and replaced with a new equation editor.