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. Redeeming your key is what links your account with Microsoft 365 so you only have to do this once.

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.

下载并安装或重新安装 Office 2019、Office 2016 或 Office 2013. 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 ...

If you're looking for Help on specific Excel Add-ins, such as Solver or Inquire, see Help for Excel for Windows add-ins. If you're looking for additional help with Excel add-ins using the COM Add-ins dialog box, see Add or remove add-ins in Excel. Get a Microsoft 365 Add-in for Excel.

Change from a 32-bit version to a 64-bit version or vice versa. Activate Windows. Fix Bluetooth problems in Windows. Learn how to install, reinstall, or activate Microsoft 365 or Office 2019 on a PC or Mac.

The new Outlook for Windows will launch into the first account on your list in Windows Mail. If Outlook can't sign you in automatically, manually type in the account and sign in. Select Import Settings on the dialog that appears to bring over your settings or choose Skip.

In Windows 10, OneDrive is the default save location for your files and documents. This means new documents or files are automatically saved to OneDrive unless you opt to save them to a different location on your PC. Learn more about how files save to OneDrive by default in Windows 10 or 11.

If you have Visio Plan 2 or a non-subscription version such as Visio Professional or Visio Standard 2021, 2019, or 2016 you can install and use the desktop app. If you have Visio Plan 1 the only way for you to access Visio is via the web app version. To learn how to access Visio this way, select the Visio for the web tab below.

The VLOOKUP and HLOOKUP functions, together with INDEX and MATCH,  are some of the most useful functions in Excel. Note: The Lookup Wizard feature is no longer available in Excel. Here's an example of how to use VLOOKUP. =VLOOKUP (B2,C2:E7,3,TRUE) In this example, B2 is the first argument —an element of data that the function needs to work.

Copilot in Word ushers in a new era of writing, leveraging the power of AI. It can help you go from a blank page to a complete draft in a fraction of the time it would take to compose text on your own. While it may write exactly what you need, sometimes it may be "usefully wrong" thus giving you some helpful inspiration.