Activate Windows using a product key. A product key is a 25-character code, that looks like this: PRODUCT KEY: XXXXX-XXXXX-XXXXX-XXXXX-XXXXX. During installation, you'll be prompted to enter a product key.

了解如何安装 Windows 11，包括在“设置”中访问 Windows 更新页的建议选项。.

了解如何查找用于激活的 Windows 产品密钥，以及何时改用数字许可证。.

如果这是你 第一次 安装 Microsoft 365，则可能需要先执行一些设置步骤。. 展开下面的 “了解详细信息”部分。. 但是如果是重新安装 Microsoft 365，且已兑换了产品密钥并拥有与 Microsoft 365 相关联的帐户，请转到“ 登录并安装 Office ”的部分。. 提示: 如果你是小型 ...

在 Windows 11 中，可通过两种方法检查蓝牙是否已打开。. 操作方法如下：. 签入快速设置： 选择任务栏右侧的“ 网络 ”、“ 声音 ”或“ 电池 ”图标 ()，查找“ 蓝牙 ” 快速设置，然后选择“ 蓝牙 ” 将其打开。. 如果你的 Windows 11 设备未连接到任何蓝牙外部 ...

PC Health Check app brings you up to date info on your Windows device health, helping you take action to improve your device performance and troubleshoot performance problems. It is periodically updated based on customer feedback to help you make the most of your Windows PC. How to open PC Health Check. In Windows, use Search on the taskbar to ...

了解如何下载、安装和配置适用于你的 Windows 版本的额外语言包。

Windows troubleshooters. Get Help has troubleshooters, or diagnostic tests, that can check your system configuration for anything that might be causing issues using your devices. Here's a few of the more common ones. Select any headline, and it will open to display more info:

How to redeem a gift card, Xbox download code or token. Both Microsoft and Xbox gift cards and download codes and tokens work the same way: once redeemed to your Microsoft account, you can spend your balance at Microsoft Store online, on Windows or Xbox, and you can get downloads for the latest apps, games, movies, TV shows, and Surface, Xbox ...

Contact us. Sign in so we can get you the right help and support. Select the product you need help with. We'll show you self-help options first. Additional help is available if you need it, including live chat with a Microsoft specialist. Microsoft 365. Office. Windows. Xbox. Surface devices. Copilot. Dynamics 365. Intune. Azure. Server products.