Learn how to sign in to Office or Microsoft 365 from a desktop application or your web browser.

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

Use your Microsoft account to sign in to Microsoft services like Windows, Microsoft 365, OneDrive, Skype, Outlook, and Xbox Live.

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

Get help for the account you use with Microsoft. Find how to set up Microsoft account, protect it, and use it to manage your services and subscriptions.

Use an existing Microsoft account to get started, then add your new account later. Set up your PC using a local account, then learn how to Change from a local account to a Microsoft account.

Get support, help, and learning resources for Microsoft 365. Organize your life, expand your creativity, and protect what’s important with Microsoft 365.

Your Microsoft account dashboard is where you can manage your personal information and security settings, keep tabs on your subscriptions and order history, and manage your …

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

欢迎使用Windows 11！ 了解新功能、升级常见问题解答、设备生命周期和支持选项。