Generally, if you bought a physical copy of Windows, the product key should be on a label or card inside the box that Windows came in. If Windows came preinstalled on your PC, the product key should appear on a sticker on your device. If you’ve lost or can’t find the product key, contact the manufacturer. To ensure your product key is ...

How to open PC Health Check. In Windows, use Search on the taskbar to search for “PC Health Check,” then select it from the list of results. If a PC Health Check update is available, you can quickly install it for the latest version. If you don't have PC Health Check installed, you can install it by going to https://aka.ms ...

If you forgot your Microsoft account password, follow these steps. Select Reset password below. Enter the email address, phone number, or Skype name you use to sign in then select Next. We'll ask where you'd like to get your verification code and select Next. Type the requested information and select Send code.

Learn how to run Windows Update Troubleshooter to resolve errors downloading or installing Windows updates.

了解 Xbox X|S、Xbox One、Xbox 360 和 Windows 10 上的 Call of Duty（使命召唤）、如何购买该游戏以及从哪里可获取疑难解答帮助。

Summary. Windows 10, versions 2004, 20H2, 21H1, 21H2, and 22H2 share a common core operating system with an identical set of system files. Therefore, the new features in Windows 10, version 22H2 are included in the latest monthly quality update for Windows 10, version 2004, 20H2, 21H1, and 21H2 but are in an inactive and dormant state.

在线: 可以在 Gold 会员专享游戏中兑换 Xbox Series X|S 和 Xbox One 的 Gold 会员专享游戏。. 它们将存储在帐户中，且在登录主机时可以随时下载。. 请注意，必须拥有信用卡才能“购买” Xbox.com 上的免费游戏。. 但是，如果是 Xbox Live Gold 或 Xbox Game Pass Ultimate 会员，则 ...

Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.

Xbox 家庭组让家长或监护人为其家庭中的每个人在 Xbox 网络上感受正常的游戏体验。. 这些家庭安全设置适用于成员登录到的任何 Xbox 主机或设备。. 成人帐户称为家庭组中的组织者。. 组织者可以管理其个人帐户并管理家庭组的成员。. 儿童和青少年帐户是组织者 ...

If you see a Let's get started screen with options to try, buy, or activate Office, this means that Office is installed on your new PC as a 1-month trial of Microsoft 365 Family. You won't receive a product key from your PC manufacturer unless you paid for an Office product key card. Instead, you can start a trial of Microsoft 365 Family, or buy Office.