Cancel your Microsoft subscription - Microsoft Support
Learn how to cancel your Microsoft subscriptions such as Microsoft 365, Copilot Pro and Xbox. Troubleshoot issues if you can't cancel your subscription.
Applies To:
Microsoft account dashboard
Set up an Outlook account on the iOS Mail app - Microsoft Support
Add your Outlook.com, Microsoft 365, or Exchange-based email account to your iPhone, iPad, or iPod Touch using the iOS Mail app.
Applies To:
Outlook for Microsoft 365, Outlook for Microsoft 365 for Mac, Outlook 2021, Office 2021, Outlook 2021 for Mac, Office 2021 for Mac, Outlook 2019, Office 2019, Outlook 2019 for Mac, Office 2019 for Mac, Outlook 2016, Office 2016, Office 2013, Microsoft 365 for home, Office for business, Office 365 Small Business, Microsoft 365 admin, Office 365 operated by 21Vianet, Office 365 operated by 21Vianet - Small Business Admin, Outlook.com, Office 365 operated by 21Vianet - Admin, New Outlook for Windows, Outlook on the web for Exchange Server 2016, Outlook Web App
Use mail merge to send bulk email messages - Microsoft Support
Create and send personalized email messages to everyone on your address list with mail merge.
Applies To:
Word for Microsoft 365, Word for Microsoft 365 for Mac, Word 2021, Word 2021 for Mac, Word 2019, Word 2019 for Mac, Word 2016
Use the SUM function to sum numbers in a range
Add the values in a range by using the Sum function in a formula (ranges meaning more than one group of cells).
Applies To:
Excel for Microsoft 365, Excel for the web, Excel 2021, Excel 2019, Excel 2016
Use mail merge for bulk email, letters, labels, and envelopes
Learn how to use mail merge in Word to create custom documents, envelopes, email, and labels with individualized elements for each recipient.
Applies To:
Word for Microsoft 365, Word for Microsoft 365 for Mac, Word for the web, Word 2021, Word 2021 for Mac, Word 2019, Word 2019 for Mac, Word 2016, Word 2016 for Mac
DATEDIF function - Microsoft Support
Warning: Excel provides the DATEDIF function in order to support older workbooks from Lotus 1-2-3.The DATEDIF function may calculate incorrect results under certain scenarios. Please see the known issues section of this article for further details.
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, SharePoint Foundation 2010, SharePoint Server 2010, Windows SharePoint Services 3.0
在 Microsoft Edge 中添加、关闭或删除扩展 - Microsoft 支持
扩展或加载项是自定义浏览器体验并为你提供更多控制权的简单工具。 下面介绍如何在 Microsoft Edge 中添加、关闭和删除扩展或加载项 。
Schedule a Microsoft Teams meeting from Outlook
Learn how to add Teams meetings to Outlook calendar using our step-by-step guide. Say goodbye to scheduling headaches and hello to seamless collaboration!
Applies To:
Microsoft Teams
Getting started with Microsoft Family Safety - Microsoft Support
Learn how to set up Microsoft Family Safety to manage screen time, filter content, and share location with your family members.
Applies To:
Microsoft Family Safety
Create and add an email signature in Outlook.com or Outlook on the web
Learn how to create and add a signature to email messages you send in Outlook.com.
Applies To:
Outlook on the web, Outlook.com, Outlook on the web for Exchange Server 2016, Outlook on the web for Exchange Server 2019