Windows 8.1 Update and Windows RT 8.1 Update (also known as KB 2919355) include improvements that make your favorite apps and settings easier to find and use, provide more familiar mouse and keyboard options, and update security and performance.Here’s what you need to know about installing this important update. Check to see if it’s already installed

Find Microsoft Excel help and learning resources. Explore how-to articles, guides, training videos, and tips to efficiently use Excel.

Data Execution Prevention (DEP) is a technology built into Windows that helps protect you from malicious code launching from areas of memory that have been designated as for data only.

扩展或加载项是自定义浏览器体验并为你提供更多控制权的简单工具。 下面介绍如何在 Microsoft Edge 中添加、关闭和删除扩展或加载项 。

The Windows 10 free upgrade offer ended on July 29, 2016. To upgrade to Windows 10, you will need to have a compatible PC and purchase a full version of the software.We recommend that you don’t install Windows 10 on an older device, as some Windows 7 devices are not compatible with Windows 10 or could experience reduced feature availability.

ChatGPT works like a chatbot as it was designed to hold a conversation with you. After giving it a question or prompt, ChatGPT uses machine learning algorithms to understand the context of the conversation and generate the appropriate responses.

OneDrive for Business provides one place to store, share and sync your work or school files.

Learn more about updates for Windows 10 version 1903, including improvement and fixes, any known issues, and how to get the update.

Sign in using two-step verification or security info; Create app passwords in Security info (preview) Set up a phone call as your verification method

Default Office theme colors. The color palette of the Office theme prioritizes the creation of modern and accessible content. The previous Office theme has been renamed Office Theme 2013–2022 and can still be accessed in the theme galleries of each Office application.. Change a theme and make it the default in Word or Excel