尚未运行 Windows 11？ 请参阅激活 Windows或激活 Windows 7 或 Windows 8.1。. 尝试“激活疑难解答” 如果运行的是 Windows 11，并且最近更换了重要的硬件（如更换主板）或重新安装了 Windows，则“激活疑难解答”有可能帮助重新激活 Windows。

了解如何接收从 Microsoft 购买的商品的退款或换货。

Choose from a variety of Surface devices and accessories to get help.

Windows Hello 是一种快速、安全、登录到 Microsoft Windows 设备的方式，面部识别使它更加轻松。 确保其安全的一个重要部分是，面部识别需要确信它在相机中看到的面部是活人，而不是照片或其他图像。

Workbooks with the "Allow changes by more than one user..." setting enabled. If the Allow changes by more than one user... setting is on for a workbook, then the following information applies. This setting is accessible by clicking the Review tab > Share Workbook.Note that in newer versions of Excel, the Share Workbook button has been hidden. To unhide it, click File > Options > Quick Access ...

Ottieni assistenza e supporto per Microsoft Edge. Trova i contenuti di supporto Microsoft Edge, nonché articoli pratici, esercitazioni e altro ancora.

Get more with Copilot Pro Gain priority access to GPT during peak times for accelerated performance to generate answers, content, and AI images even faster.

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。

Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.

Dictation lets you use speech-to-text to author content in Office with a microphone and reliable internet connection. Use your voice to quickly create documents, emails, notes, presentations, or even slide notes.