Learn more about product keys, Workplace Discount Program, and volume licenses. Some Office 2019, Office 2016, and Office 2013 products come with a product key. If yours did, before installing Microsoft 365 for the first time, sign in with an existing or new Microsoft account and enter your product key at office.com/setup.

Installation media, such as a USB flash drive, can be used to install a new copy of Windows, perform a clean installation of Windows, or reinstall Windows. To create installation media, go to the software download website, where step-by-step instructions can be found.

Sign in to download Microsoft 365 or Office. Go to www.office.com and if you're not already signed in, select Sign in. Note: If you're using Microsoft 365 operated by 21 Vianet, sign in with your work or school account to login.partner.microsoftonline.cn.

Plan a remote gathering, create school projects, set health and fitness goals, and manage your household budget with the apps, tools, and features of Microsoft 365. Explore Microsoft Office help and training resources. Find how-to articles, video tutorials, and additional support for Office apps.

Remote Assistance Support from Microsoft allows a Microsoft support professional in another location to view your computer screen and work on your computer over a secured connection. Protect yourself from tech support scams. Before clicking 'I accept', review the: By selecting the ‘I accept’ option of Remote Assistance support from ...

需要连接到 Internet 才能下载此安装文件，但一旦下载完成，就可以在方便的时候离线在电脑上安装 Microsoft 365。 如果你的 Microsoft 365 产品是 Office 家庭版 或 Office 商业版 计划的一部分，则以下步骤会有所不同，你需要为产品选择正确的选项卡。 单击此处可查看家庭版或商业版计划中包含的产品。 选择计划. Office 家庭版 Office 商业版. 步骤 1. 从你的帐户门户下载脱机安装程序. 要下载脱机安装程序，请转到 www.office.com/myaccount。 如果还未使用与 Microsoft 365 或 Microsoft 365 副本相关联的 Microsoft 帐户 登录，请现在执行此操作。

Use the Office offline installer to install Office 2016 or Office 2013 if you don't have an active Internet connection or you're having problems with slow speed or unreliable connections.

Download and install or reinstall Microsoft 365 or Office 2021 on a PC or Mac. Set up Office apps and email on a mobile device. Small business help and learning. Learn how to download and install apps you need from your Microsoft 365 business subscription.

Applies To. 如果这是你 第一次 安装 Microsoft 365，则可能需要先执行一些设置步骤。 展开下面的 “了解详细信息”部分。 但是如果是重新安装 Microsoft 365，且已兑换了产品密钥并拥有与 Microsoft 365 相关联的帐户，请转到“ 登录并安装 Office ”的部分。 提示: 如果你是小型企业所有者，想要详细了解如何设置 Microsoft 365，请访问 小型企业帮助和学习。 了解有关产品密钥、工作区折扣计划、批量许可证的详细信息. 登录并下载 Microsoft 365. 转到 Microsoft 帐户仪表板， 如果尚未登录，请选择“ 登录 ”。 使用与此 Microsoft 365 版本关联的 Microsoft 帐户登录。

On the Windows 11 software download page, select Create tool now and follow the instructions to install Windows 11. Warning: Microsoft recommends against installing Windows 11 on a device that does not meet the Windows 11 minimum system requirements.