Add an easy to maintain Table of Contents using heading styles that automatically updates when you make changes to your headings.

Learn how to prepare your Windows device for a hardware change and find help reactivating Windows after a hardware change is complete.

The Program Install and Uninstall troubleshooter helps you automatically repair issues when you're blocked from installing or removing programs.

Learn how to get Microsoft Store updates for your apps and games. Download the latest versions of Microsoft Store apps and games.

Learn about how tracking prevention works in Microsoft Edge. Adjust your tracking prevention setting to detect and block known trackers.

Manually download a language for Cortana speech. Go back to Settings > Time & language > Language, select your new language, and then use the up-arrow button to move it to the top of the list and make it the default.

Add a list box to your Excel worksheet from which users can choose a value. Make data entry easier by letting users choose a value from a combo box. A combo box combines a text box with a list box to create a drop-down list. You can add a Form Control or an ActiveX Control combo box.

Learn about the recovery options in Windows. Find out how to reset your PC, go back to a previous version of Windows, or use media to reinstall Windows.

本文介绍 Microsoft Excel 中 DELTA 函数的公式语法和用法。. 说明. 检验两个值是否相等。 如果 number1=number2，则返回 1；否则返回 0。 可以使用此函数来筛选一组值。

了解如何使用 Windows 11 中的任务栏功能。 使用任务栏设置隐藏任务栏、固定应用、更改位置等。