Support for Windows 10 has ended on October 14, 2025. Learn more about your options for Windows 10.

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The Microsoft Authenticator app helps you sign into your accounts when you're using two-step verification.

Hey XBOX Insiders! We are releasing a new XBOX Update Preview to the Alpha Skip-Ahead ring today. Continue reading below to learn all about what's included with this update.

Learn how to install, reinstall, or activate Microsoft 365 or Office 2024 on a PC or Mac.

注意 Microsoft Authenticator 不 适用于电脑或 Mac，因为出于安全原因，验证器应用是专为智能手机设计的。 了解详细信息。 Microsoft 不再支持超过一年的 Authenticator 版本。 始终使设备保持最新。 中国用户应阅读 如何在中国下载和使用 Microsoft Authenticator。

Find solutions for Xbox account and profile issues, manage settings, and get support for your Xbox experience.

Learn how to install Office 2021, 2019, or 2016 on your PC or Mac.

Learn how to register your XBOX product so that you can request and track repairs, check your warranty service, and buy an extended service plan. There’s also info on unregistering and unlinking your device.

學習如何找到 Windows 產品金鑰來啟用，以及何時會改用數位授權。