Learn how to use eye control in Windows to type with an on-screen keyboard, communicate with people, and control the mouse with your eyes.

Learn how to get the latest Windows updates. Find answers to FAQ about updating Windows to keep your PC up to date.

Questions and answers about artificial intelligence (AI), and how it's used in Microsoft products such as Microsoft Copilot.

查找 Microsoft Excel 帮助和学习资源。 了解如何有效使用 Excel 的指导文章、指南、培训视频和提示。

向任务添加限制以更改 Project 计算任务开始日期或结束日期的方式。 Project 提供可以影响开始日期的八种类型的任务限制。

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.

This page shows info about the activity in your Microsoft account, within the last 30 days.

Get the most out of your subscription with expert advice and support from small business advisors. Business Assist for Microsoft 365 is designed for small businesses to give you and your employees around-the-clock access to small business advisors as you grow your business, from onboarding to everyday use.

即使已开启其他防火墙，开启 Microsoft Defender 防火墙也很重要。 它保护你免遭未经授权的访问。 若要打开或关闭 Microsoft Defender 防火墙，请执行以下操作：

O aplicativo Verificação de integridade do PC traz informações atualizadas sobre o seu dispositivo Windows, ajudando você a tomar medidas para melhorar o desempenho do dispositivo e solucionar problemas de desempenho.