Informazioni su come installare, reinstallare o attivare Microsoft 365 o Office 2019 in un PC o un Mac.

查找有关 Windows 操作系统的帮助和操作方法文章。 获取对 Windows 的支持，并了解安装、更新、隐私、安全等方面的信息。

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

The Basics of Search. Returning search results is no easy feat, and involves complex, near-instantaneous algorithmic calculations. A search for something as simple as “cat” could yield over 55 million results.

Learn how to use Microsoft Edge for mobile devices, sync your browser data, and get answers to common questions.

Focus is a new feature in Windows 11 that helps you minimize distractions. To help you stay on track, it integrates with the Clock app with features like a focus timer and music integration.

Explains how to sync your Google, Yahoo, iCloud, and IMAP mail, contacts, and calendar to the Microsoft Cloud.

Create a document or other type of library in SharePoint to securely store files where you and your co-workers can find them easily, work on them together, and access them from any device at any time.

Learn how to change your notification settings and quick actions using the notification center in Windows.

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