What is a Microsoft account used for? You need a Microsoft account to sign in to your Windows pc, Xbox console, or any of Microsoft’s products and services, including Office, Outlook.com, OneDrive, Xbox Live, Microsoft 365, Family Safety, Skype, Bing, Microsoft Store and MSN.

Surface devices get updates through Windows Update. Find out what's included in each update and how to manually update your Surface. Select your device from the following list to see its update history.

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

Back up the registry manually. Select Start , type regedit.exe in the search box, and then press Enter.If you are prompted for an administrator password or for confirmation, type the password or provide confirmation.

按“开始”按钮 ，然后在“搜索”框中输入“Xbox”。 从结果中选择 Xbox 应用以打开该应用。; 选择左上角的玩家图片，然后选择“设置”。 在“兑换代码”下选择“兑换”。 输入由 25 个字符组成的代码，选择 下一步，然后按照提示操作。

The Windows 10 free upgrade offer ended on July 29, 2016. To upgrade to Windows 10, you will need to have a compatible PC and purchase a full version of the software.We recommend that you don’t install Windows 10 on an older device, as some Windows 7 devices are not compatible with Windows 10 or could experience reduced feature availability.

注意 若要在 Game Bar 中使用许多 Xbox 功能，包括 Xbox Social 功能，必须安装 Windows Xbox 应用。 若要使用 Xbox Social 的功能，请使用 Microsoft 帐户登录到 Game Bar。 按 Windows 徽标键 + G 打开 Game Bar，选择“设置”>“帐户”，然后选择“登录”并按照步骤进行操作。

如需了解详细信息，请观看加入 Teams 会议视频。. 通过链接加入. 只需通过一个连接即可加入 Teams 会议。 在会议邀请中选择“ 立即加入会议”，将其带到一个页面，你可以在其中选择加入 Web 或下载桌面应用。 如果你已拥有 Teams 应用，会议将自动打开。

The chat provider is the underlying service that Copilot in Windows uses to communicate with you. The chat provider platform is important because it's possible for you to copy and paste sensitive organizational information into the chat.

Xbox Support 为 Xbox、Game Pass 和账单问题提供帮助。在 Xbox Support 社区中获取建议和客户服务。