Office のプロダクト キーを入力する場所 - Microsoft サポート
Office または Microsoft 365 を購入したときにプロダクト キーが付属していた場合は、使用している製品に対応する以下の Web サイトのいずれかにプロダクト キーを入力します。
Applies To:
Office 2021, Office 2021 for Mac, Office 2019, Office 2019 for Mac, Office 2016, Microsoft 365 for home, Office.com
使用 VLOOKUP、INDEX 或 MATCH 查找值 - Microsoft 支持
使用 vlookup、hlookup 和其他函数（如 index 和 match）根据您输入的值搜索和查找数据。 本文将让您快速回顾 vlookup，然后链接到更多内容。
Applies To:
Excel for Microsoft 365, Excel for the web, Excel 2021, Excel 2019, Excel 2016
Keyboard shortcuts in Microsoft Edge - Microsoft Support
Keyboard shortcuts are keys or combinations of keys that provide an alternate way to do something you'd typically do with a mouse. Here’s the list for the new Microsoft Edge and Microsoft Edge for Mac.
Find and install your Microsoft downloads from Microsoft Store
Learn how to find and install digital downloads from Microsoft Store. See instructions to download and install software directly purchased from Microsoft.
Applies To:
Microsoft account dashboard
SUM function - Microsoft Support
How to use the SUM function in Excel to add individual values, cell references, ranges, or a mix of all three.
Applies To:
Excel for Microsoft 365, Excel for Microsoft 365 for Mac, Excel for the web, Excel 2021, Excel 2021 for Mac, Excel 2019, Excel 2019 for Mac, Excel 2016
Delay or schedule sending email messages in Outlook
Compose a message now, but schedule it to be sent later.
Applies To:
Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016, Outlook on the web, Outlook.com, New Outlook for Windows, Outlook on the web for Exchange Server 2016, Outlook on the web for Exchange Server 2019
Fix problems with apps from Microsoft Store
Get troubleshooting tips to fix problems with apps from Microsoft Store.
Switching out of S mode in Windows - Microsoft Support
Learn how to switch out of S mode to install apps from outside of the Microsoft Store or to upgrade to Windows 11.
Send feedback to Microsoft with the Feedback Hub app
Learn how to use Feedback Hub to report problems or send suggestions to Microsoft.
Create and add an email signature in Outlook - Microsoft Support
How to create or edit your Outlook signature for email messages. Include your signature, text, images, electronic business card, and logo.
Applies To:
Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016, Office for business, Office 365 Small Business, Microsoft 365 admin, Outlook on the web, Outlook.com, New Outlook for Windows, Outlook on the web for Exchange Server 2016, Outlook on the web for Exchange Server 2019