Learn how to activate Windows using a product key or digital license, check your activation status, and link your Microsoft account.

Learn how to check for, download, and install KB 2919355, an update for Windows 8.1 and Windows RT 8.1.

Change two-step verification settings; Common problems with two-step verification for work or school accounts; Manage app passwords for two-step verification

Aprende a conectarte a una red Wi-Fi en Windows y administrar las conexiones de red actuales.

获取有关 Windows 安全的帮助; 在 Microsoft Edge 中查看和删除浏览器历史记录; 删除和管理 Cookie; 重新安装 Windows 时安全移除有价值的内容

Microsoft made a commitment to provide 10 years of product support for Windows 7 when it was released on October 22, 2009. This 10-year period has now ended, and Microsoft has discontinued Windows 7 support so that we can focus our investment on supporting newer technologies and great new experiences.

使用 Windows 中的“设置”应用通过蓝牙发送文件。

Find out how to submit a request for a refund for a purchase of digital Xbox content.

如果麦克风功能出现问题，则以下信息可以帮助你排除故障和解决问题。 确保应用有权访问麦克风. 如果在更新麦克风后未检测到Windows 11，您可能需要授予应用使用它的权限。

Discover the latest updates for Windows 10, including improvements and fixes, known issues, and guidance on how to get the update.