Learn how to install, reinstall, or activate Microsoft 365 or Office 2019 on a PC or Mac.

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注意: 使用安装介质重新安装Windows 11，同时选择“不保留任何内容” (干净安装) ，如果重新安装 Windows 的分区为 20GB 或更大，则将自动启用保留存储。 保留存储空间将留出磁盘空间以供更新、应用、临时文件和系统缓存使用，因此可确保关键的操作系统功能始终可以访问磁盘空间，从而改进了电脑 ...

Invisible digital signatures in Word, Excel, or PowerPoint. An invisible digital signature, like a visible digital signature line, assures the authenticity, integrity, and origin of a document.

Use AI to decorate your background in a meeting. Take advantage of the new AI-generated Decorate effect in Teams to further personalize your backgrounds. There are five options to choose from: Clean up: Tidies up your surroundings, removing clutter and creating a more streamlined and minimalistic aesthetic.

Get started with basic tasks in Excel such as opening a workbook, entering and formatting data, calculating data, and trying some quick analysis features..

To change your screen resolution, use the drop-down menu next to Display resolution.. Note: You should use the Recommended resolution. If you change the resolution, content might appear blurry or pixelated.

تثبيت Microsoft 365 للمرة الأولى. تأتي بعض Office 2019وOffice 2016 ومنتجات Office 2013 بمفتاح منتج. إذا كان منتجك يحتوي على مفتاح، فقم بتسجيل الدخول لأول مرة باستخدام حساب Microsoft موجود أو جديد قبل تثبيت Microsoft 365، ثم أدخل مفتاح المنتج الخاص بك ...

Checkboxes are a versatile feature in Excel, useful for making interactive lists and forms. In this article, we'll cover how to add, remove, and toggle them.

Obtenga información sobre cómo activar Windows con una clave de producto o una licencia digital, comprobar el estado de activación y vincular su cuenta de Microsoft.