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解决激活错误. 如果 Microsoft 365 无法激活，其最后会变为未授权，且 Microsoft 365 的所有编辑功能都会被禁用。 Microsoft 可能由于多种原因变为未授权。

Find Microsoft Excel help and learning resources. Explore how-to articles, guides, training videos, and tips to efficiently use Excel.

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Find help and how-to articles for Windows operating systems. Get support for Windows and learn about installation, updates, privacy, security and more.

Explore Microsoft Store services From free shipping and returns to our 60-day price protection, we’re here to help you do more with best-in-class devices, software, games, and resources.

You can apply sensitivity labels to your files and emails to keep them compliant with your organization's information protection policies. Sensitivity labels are configured by your administrator and because they're published to users rather than locations such as sites and mailboxes, users in the same organization might see different sensitivity labels to apply.

Microsoft Edge is designed to detect and block known trackers. We let you decide what trackers to block. You can choose from three levels of tracking prevention: Basic, Balanced, and Strict.

Under Personalization & advertising, turn on or off the setting for Allow Microsoft to save your browsing activity including history, usage, favorites, web content, and other browsing data to personalize Microsoft Edge and Microsoft services like ads, search, shopping and news.

Notes: The site usage report download does not include data for Shared with external users in the report.. The site usage report download does not include data for average time spent per user.. To export a Shared with external users report, you need to extract this data to a CSV file by clicking the Run Report button on the bottom right corner of the page.