Learn how to tell if your Office software is genuine. To help determine if your Microsoft software is genuine, go to our How to Tell site for more information. Here you'll learn about authentic packaging, including what to look for with product key labels, and Certificate of Authenticity (COA), how to report counterfeit software, and find out what your shopping and licensing options are.

Microsoft .NET Framework 4.8.1 is a highly compatible and in-place update to .NET Framework 4.8. It includes native support for the Arm64 architecture (Windows 11+), accessibility improvements as well as other improvements.

Explore subscription benefits, browse training courses, learn how to secure your device, and more.

无论使用哪种方法，只要登录到 Xbox 网络，系统都会在线保存你的游戏数据。 这意味着，下次无论何时玩该游戏时（如果你购买了游戏，或者在其他人家里玩游戏，或者游戏返回到 Game Pass 中），你都将可以从上次离开的地方继续畅玩。

Digital goods like apps, games, add-on content, subscriptions, movies, TV shows, and books aren't returnable unless the offer for applicable law states that you're eligible for a refund.

The Snap feature is a great way to improve your productivity by sharing many app windows in a single screen. Different layouts are available with many sizes to choose from, so you can get the most from your favorite apps when you are working on specific tasks.

在网页上加入 Teams 会议. 没有 Teams 应用？ 你仍然可以加入 Teams 会议。 在电子邮件邀请中，选择“ 立即加入会议”。 还可以使用电子邮件中的拨入号码和会议 ID 进行拨入。

This is a subscriber-only, Microsoft 365 feature. Find your version. Design ideas for one photo Applies to: PowerPoint for Microsoft 365 Current Channel: Version 1511 or later Semi-Annual Enterprise Channel: Version 1602 or later Multiple photos, color extraction, and facial recognition

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.

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。