Learn about Windows service packs and download the latest updates for Windows 10 and Windows 8.1

注意: 可以使用你拥有的电子邮件地址作为 Microsoft 帐户，或者在注册时选择“获取新电子邮件地址”或“改用电子邮件”来 ...

A list of Excel training, from entry level to advanced skills, plus templates and other resources.

Learn how to get Windows Media Player 12 for Windows 10, Windows 8.1, and Windows 7.

كيفية فتح التحقق من صحة الكمبيوتر. في Windows، استخدم البحث على شريط المهام للبحث عن "التحقق من صحة الكمبيوتر"، ثم حدده من قائمة النتائج.

How to lock cells in Excel to protect your data. You can also unlock a range of cells and grant permissions to others to edit.

화면 및 절전 모드 설정을 사용하여 에너지를 절약하고 배터리를 더 오래 지속할 수 있습니다.

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了解如何在 Windows 10 和 Windows 11 中添加用户帐户。 有了帐户之后，每个人都可拥有单独的文件、浏览器收藏夹和私人桌面。

Use the Office offline installer to install Office 2016 or Office 2013 if you don't have an active Internet connection or you're having problems with slow speed or unreliable connections.