Filter junk email and spam in Outlook - Microsoft Support
Learn how to block someone or add email addresses to the safe senders list in Outlook on the web.
Applies To:
Office for business, Office 365 Small Business, New Outlook for Windows, Outlook on the web for Exchange Server 2016, Outlook on the web for Exchange Server 2019
Change your country or region in Microsoft Store
If you change your country or region for Microsoft Store, stuff you got in one region might not work in another.
Create professional slide layouts with Designer - Microsoft Support
Learn how to design professional-looking presentations with Microsoft 365. Create high quality, customized slides in a few clicks with PowerPoint Designer.
Applies To:
PowerPoint for Microsoft 365, PowerPoint for Microsoft 365 for Mac, PowerPoint for the web, PowerPoint 2021, PowerPoint 2019, PowerPoint 2016, PowerPoint for iPad, PowerPoint for Android tablets, PowerPoint Mobile
Reactions in Microsoft Outlook - Microsoft Support
Important: Reactions are only available to individuals using a work or school account in Outlook with a qualifying Microsoft 365 subscription.
Applies To:
Outlook for Microsoft 365, Outlook for Microsoft 365 for Mac, Outlook 2016, Microsoft 365 admin, Outlook on the web, Microsoft 365 Apps for business, New Outlook for Windows, Outlook for Android, Outlook for iOS
Common file name extensions in Windows - Microsoft Support
Find out how to identify and manage different file types in Windows with File Explorer and common extensions.
Meeting options in Microsoft Teams - Microsoft Support
Admins set default meeting settings. They try to optimize for most use cases, but if you want to adjust your options for a specific Teams meeting, go to Meeting options.
Applies To:
Microsoft Teams
Windows Media Player - Microsoft Support
Learn how to download, customize, and troubleshoot Windows Media Player 12 with helpful guides and tips.
在 Microsoft Teams 中新增或邀請組織外部人員加入聊天
在您需要新增參與者的現有群組聊天中選擇或進行使用。 在 Teams 右上角的個人檔案圖片下方，選 取 [檢視並新增參與者 ，然後選擇 [ 新增人員 ] 。 選取新增的參與者名稱，然後選擇是否要包含多少聊天記錄。
Applies To:
Microsoft Teams
Smart charging on Surface - Microsoft Support
Smart charging will be paused and allow a full battery charge until your Surface needs to turn it on again. It may take several days before smart charging turns on again and limits your battery capacity to 80%.
Choose which OneDrive folders to sync to your computer
Learn how to choose which OneDrive files and folders you want to sync to your computer.
Applies To:
OneDrive for Business, SharePoint Server Subscription Edition, SharePoint Server 2019, Office for business, OneDrive (work or school), OneDrive (home or personal), OneDrive for Mac, OneDrive for Windows