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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.

With External Access for Teams, you can add or invite anyone outside of your Teams org who uses Teams, Teams for personal use, Skype (for consumers), and Skype for Business to a one-to-one chat.

An Outlook online archive mailbox can store older email messages where they won't occupy space in your primary mailbox. This specialized mailbox appears alongside your other mailbox folders in Outlook.

从确保设备可以运行 Windows 11 到备份文件和安装 Windows 11，了解如何为 Windows 11 升级做好准备。

在开始之前，请确保Windows 11电脑支持蓝牙。 有关如何检查的详细信息，请参阅修复 Windows 中的蓝牙问题。 如果需要帮助添加没有蓝牙功能的设备，请参阅将设备添加到 Windows 电脑。. 打开蓝牙

Learn why you received a notification about unusual activity in your account and what to do next.

Linking Microsoft personal accounts. It’s not possible to link, merge or combine Microsoft personal accounts, and you can't you transfer such things as your game progress or gamertag, account purchases and balance from one account to another, but accounts can be used side by side.

Add-ins provide optional commands and features for Microsoft Excel. By default, add-ins are not immediately available in Excel, so you must first install and (in some cases) activate these add-ins so that you can use them. Some add-ins are built in to Excel, such as Solver and the Analysis ToolPak. Some other add-ins are available from the Download Center, and must first be downloaded and ...

How to correct a #SPILL error in Excel (when a formula returns multiple results and cannot return them to the grid).