Learn how to extend your PC's battery life using battery saver and other power-saving tips for Windows.

Copilot in Bing is grounded in web search results when users are seeking information. This means that we center the response provided to a user’s query or prompt on high-ranking content from the web, and we provide links to websites so that users can learn more.

Learn how Smart charging in Windows can help your battery last longer over time.

We would like to show you a description here but the site won’t allow us.

本文介绍如何在 Windows 8.1、Windows 8、Windows 7 或 Windows Vista 中使用系统文件检查器工具来解决丢失或损坏的系统文件的问题。

After you've signed up for Microsoft 365, you and your employees can install your Office apps. From the admin center, select Office software.. Choose a language, and then select Install.. When prompted, select Run.. Select Yes to allow the app to make changes to your device.. The installation may take several minutes, depending on your Internet speed.

Get Microsoft billing support. Find help with Microsoft Store purchases, subscriptions, refunds, payment options, and checking your order history.

Linking to other workbooks is a very common task in Excel, but sometimes you might find yourself with a workbook that has links you can’t find even though Excel tells you they exist.

Learn how to check for, download, and install KB 2919355, an update for Windows 8.1 and Windows RT 8.1.

Découvrez comment installer Office 2013 sur PC ou Office pour Mac 2011.