Securely sign in to access your Microsoft account and manage emails, calendars, and other services efficiently.

Sign in to access your Microsoft Office account and manage your emails, documents, and other resources online.

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Access Microsoft 365 to create, share, and collaborate using your favorite apps like Word, Excel, and PowerPoint.

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Simplify Office deployment with Microsoft 365 Apps admin center to create, modify, and export configurations tailored to your organization.

Insights from these measurements help you discover and understand connectivity problems for individual office locations and how you can update your network architecture to improve connections to Microsoft 365.

Office.com 在多个国家/地区可用。请选择您的语言首选项。

Microsoft To Do helps you organize tasks, manage lists, and stay productive with seamless integration across devices and platforms.

A degraded or unhealthy status can be caused by various issues across the entire customer connection path, including issues with Microsoft’s network and availability, the customer’s network infrastructure, internet service provider availability, and third-party intermediary devices. Go to Service health in the Microsoft 365 admin center for more details on any issues we’ve detected ...