Set up your Microsoft 365 sign-in for multi-factor authentication
Learn how to set up your user account for multifactor authentication with Microsoft 365.
Applies To:
Office for business, Microsoft 365 admin
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
Account has been locked - Microsoft Support
Learn how to unlock your Microsoft account and resolve 'account has been locked' error message.
Create a simple formula in Excel - Microsoft Support
How to create simple formulas in Excel using AutoSum and the SUM function, along with the add, subtract, multiply, or divide values in your worksheet.
Applies To:
Excel for Microsoft 365, Excel for Microsoft 365 for Mac, Excel 2021, Excel 2021 for Mac, Excel 2019, Excel 2019 for Mac, Excel 2016
Examples of common formulas in lists - Microsoft Support
See examples of column formula syntax for use in SharePoint lists and libraries.
Applies To:
SharePoint Server Subscription Edition, SharePoint Server 2019, SharePoint Server 2016, SharePoint Server 2013 Enterprise, SharePoint Server Central Admin 2013, SharePoint in Microsoft 365, SharePoint Server 2010, Microsoft Lists, SharePoint in Microsoft 365 Small Business
Add or delete notifications or reminders in Outlook
In Outlook, you have the option to: Snooze or dismiss events or tasks | Turn the notifications on or off | Add reminders to events | Add reminders to tasks | Troubleshoot notifications. Snooze or dismiss an event or task. With the reminders window, you can select to snooze calendar events and tasks, join a Teams meeting, or dismiss events and tasks.
Applies To:
Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016, Outlook on the web, New Outlook for Windows
Send large files with Outlook - Microsoft Support
Send large files by using file sharing, cloud services, or other solutions for working around file size limits in Outlook.
Applies To:
Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016
Encrypt messages by using S/MIME in Outlook on the web
Want to add a padlock to your email messages? You can use S/MIME in Outlook on the web to increase the security of messages. A digitally encrypted message can only be opened by recipients who have the correct key.
Applies To:
Outlook.com, Outlook on the web for Exchange Server 2016, Outlook on the web for Exchange Server 2019
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
打开或关闭 Microsoft Defender 防火墙 - Microsoft 支持
即使已开启其他防火墙，开启 Microsoft Defender 防火墙也很重要。 它保护你免遭未经授权的访问。 若要打开或关闭 Microsoft Defender 防火墙，请执行以下操作：