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Learn how to use Microsoft and Xbox gift cards, download codes and tokens to your Microsoft account. Find out how to redeem Office product keys and Windows activation codes, and get help with common problems.

Applies To: Microsoft account dashboard

Learn how to download and install Microsoft 365 apps, like Word, Excel, and PowerPoint, on your PC or Mac. Follow the instructions in the browser and sign in with your Microsoft 365 account to activate the apps.

Learn how to use VLOOKUP, HLOOKUP, INDEX and MATCH to look up values in Excel tables. See examples, tips and limitations of each function, and how to use the new XLOOKUP and XMATCH functions.

Applies To: Excel for Microsoft 365, Excel for the web, Excel 2024, Excel 2021, Excel 2019, Excel 2016

Learn how to download and install Microsoft 365 or Office 2021 on your device, whether you have a Microsoft account, a work or school account, or a product key. Find out how to activate the apps, change the version, and get help with common issues.

Applies To: Office 2024, Office 2024 for Mac, Office 2021, Office 2021 for Mac, Office 2019, Microsoft 365 for home, Office for business, Office 365 Small Business, Microsoft 365 admin, Office 365 operated by 21Vianet, Office 365 operated by 21Vianet - Admin, Microsoft 365 for Mac, Office 365 Germany - Enterprise, Office 365 Germany - Enterprise admin

Find out how to download and install Microsoft 365 or Office 2019, 2016, or 2013 on your PC or Mac. Follow the steps to sign in, choose your language and bit version, and activate your product.

Applies To: Office 2019, Office 2016, Office 2016 for Mac, Office 2013

Learn how to view, install, and change settings for add-ins that enhance your productivity in Excel, PowerPoint, and Word. Find out how to deal with add-in security, compatibility, and device access issues.

Applies To: Excel for Microsoft 365, Word for Microsoft 365, PowerPoint for Microsoft 365, Excel for Microsoft 365 for Mac, Word for Microsoft 365 for Mac, PowerPoint for Microsoft 365 for Mac, Excel for the web, Word for the web, PowerPoint for the web, Excel 2024, Word 2024, PowerPoint 2024, Excel 2024 for Mac, Word 2024 for Mac, PowerPoint 2024 for Mac, Excel 2021, Word 2021, PowerPoint 2021, Excel 2021 for Mac, Word 2021 for Mac, PowerPoint 2021 for Mac, Excel 2019, Word 2019, PowerPoint 2019, Word 2019 for Mac, Excel 2016, Word 2016, PowerPoint 2016, InfoPath 2013

If you recently modified your device hardware and want to upgrade to Windows 11, you need to see if your device meets the system requirements. Learn how to use the PC Health Check app or manually refresh the eligibility assessment in Settings.

Learn how to get Visio, a stand-alone application for creating diagrams, on your PC or online. Find out which version of Visio you have, how to associate it with your account, and how to download and install it.

Applies To: Visio Plan 2, Visio Professional 2024, Visio Standard 2024, Visio Professional 2021, Visio Standard 2021, Visio Professional 2019, Visio Standard 2019, Visio Professional 2016, Visio Standard 2016, Office for business, Office 365 Small Business, Microsoft 365 admin

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。

Applies To: Office 2019, Office 2016, Office 2016 for Mac, Office 2013

Find solutions to common problems, or get help from a support agent for Microsoft 365, Office, Windows, Xbox, Surface and more. Sign in to get personalized help and access live chat, phone, or email options.