Help for Microsoft mobile apps on Android and iOS devices. Find how-to articles and video tutorials for Samsung Galaxy and iPhone. Learn how to link your Microsoft 365 mobile apps, including Outlook, OneNote, and Your Phone.

Learn about Xbox online safety so you can manage your family's accounts.

Windows 10, version 21H2 update history; July 9, 2024—KB5040427 (OS Builds 19044.4651 and 19045.4651) June 11, 2024—KB5039211 (OS Builds 19044.4529 and 19045.4529)

从 Microsoft 获取免费的 Windows 主题，以个性化设置电脑的背景、颜色和声音。

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Learn all about games and apps for Xbox and get help with any problems you're having.

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