A wired Ethernet connection lets you get a fast internet connection—plug one end of the Ethernet cable into your router at home, then plug the other end into the Ethernet port on your Windows PC. (If your PC doesn’t have an Ethernet port but you want to try this option, you might consider getting a USB to Ethernet adapter.)

Learn how to download, install, and configure additional language packs for your version of Windows.

Keyboard shortcuts are keys or combinations of keys that provide an alternate way to do something you'd typically do with a mouse. Here’s the list for the new Microsoft Edge and Microsoft Edge for Mac.

Learn how to get ready for the Windows 11 upgrade, from making sure your device can run Windows 11 to backing up your files and installing Windows 11.

To install Authenticator on your Android device. Scan the QR code. or download and install Authenticator from the Google Play store.

工作表函数按其功能分类。 单击某个类别可浏览其功能。 也可以通过按住 Ctrl+F 并键入前几个字母或描述性单词来查找函数。 要获取有关某个函数的详细信息，请在第一列中单击其名称。 按类别（例如逻辑函数或文本函数）列出所有 Excel 函数。

Microsoft .NET Framework修复工具检测影响 Microsoft .NET Framework 安装或更新的常见问题。 该工具尝试通过应用已知修补程序或修复受支持的.NET Framework版本的损坏安装来解决这些问题。 该工具具有易于使用的基于向导的用户界面 (UI) 。 它还支持命令行使用以及更高级的选项。

如果所购买的 Office 或 Microsoft 365 随附有产品密钥，请在你的产品所对应的下列网站中输入产品密钥。 输入密钥后，便可以下载并安装 Office，或可以续订 Microsoft 365 订阅。

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

Contact Microsoft Support. What's new. Surface Pro. Surface Laptop. Surface Laptop Studio 2. Surface Laptop Go 3. Microsoft Copilot. AI in Windows. Explore Microsoft products.