Learn how to use the Microsoft Authenticator app or another app of your choice as a two-step verification method for your work or school account. Follow the steps to scan a QR code, add your phone number, and get a verification code or a notification on your mobile device.

Learn how to locate your 25-character product key or digital license for Windows 10 or Windows 11, depending on how you got your copy. See where to find your product key for Windows 7 or Windows 8.1, and how to tell if it's genuine.

如果上述步骤都不能修复你的蓝牙问题，请使用 Windows 反馈中心报告错误。 这可帮助 Microsoft 确定此问题的根本原因。

Learn how to use a USB flash drive or DVD to install, reinstall, or perform a clean installation of Windows 10, 8.1, 7, or 11. Find the software download website, product key, and recovery options.

如果在设置中打开以不同于首选语言编写的页面，Microsoft Edge 将自动提示你翻译它。 转到使用外语编写的网页时，“翻译”图标 显示在地址栏中。 如果某种语言不在“设置”的“首选语言”列表中，则将被视为外语。若要在列表中添加或删除语言，请在 Microsoft Edge 中，转到 “设置”等 > 设置 ...

但如果需要测试多个条件，例如我们假设所有条件都需要为 True 或 False (AND)，或只有一个条件需要为 True 或 False (OR)，或者如果想要检查某个条件是否不 (NOT) 符合你的条件，这时该怎么做呢？这三个函数均可以单独使用，但它们更常见于与 IF 函数成对使用。

Learn how to use the PC Health Check app or the Microsoft Compatibility Appraiser task to see if your device meets the system requirements for Windows 11 after changing your hardware. Find out how to refresh the eligibility assessment and what factors affect the upgrade offer.

注意: 无线显示应用在运行 Windows 11 版本 22H2 及更高版本的设备上可用。如果运行的是早期版本的 Windows，请在任务栏的搜索框中输入 “连接”，然后在结果列表中选择“连接”，从而启动 “连接” 应用。 若要了解你运行的是哪个版本的 Windows，请参阅我运行的是哪个版本的 Windows 操作系统？

Learn how to troubleshoot Bluetooth issues on your PC, such as pairing, connecting, or using Bluetooth devices. Find solutions for common Bluetooth problems, such as missing icon, driver updates, or accessory issues.

Learn how to take a snapshot of any part of your PC screen with Snipping Tool. Find out how to open, edit, save, share, and print your screenshots, and use keyboard shortcuts and OCR features.