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What is: Multifactor Authentication - Microsoft Support
How does multifactor authentication work? Let's say you're going to sign into your Microsoft account or work or school account, and you enter your username and password.If that's all you need then anybody who knows your username and password can sign in as you from anywhere in the world!
How to earn Microsoft Rewards points - Microsoft Support
Buy stuff from Microsoft Store online (from your mobile device, on Xbox One, in the Microsoft Store app on your Windows 10/11 or Windows 8.1 device, or via the web).
Applies To: Microsoft account dashboard
Use a proxy server in Windows - Microsoft Support
If you don’t want to use the proxy server when you visit certain websites, enter the ending of the website address in the exception list (for example, *.contoso.com). For multiple websites, type each website address and separate the addresses with a semicolon (for example: *.contoso.com; *.adatum.com).The * is a wildcard so any website addresses that end with the website address listed will ...
管理与你的 Microsoft 帐户一起使用的设备 - Microsoft 支持
断开设备与 Microsoft Store 的链接. 如果无法从 Microsoft Store 中下载内容,则你可能已达到了设备限制。 通过删除不使用的设备或者不再有权访问的设备来管理你的限制。
Applies To: Microsoft account dashboard
在 Microsoft Teams 中安排会议 - Microsoft 支持
在日程安排表单中,可以为会议指定标题、邀请人员和添加会议详细信息。 使用“日程安排助理”查找适合每个人的时间。 在 “日程安排助理”中,可以看到与会者在不同时间段内的时区、计划和可用性。 “日程安排助理”网格将显示每个与会者的日程安排。当与会者忙碌或进行临时会议时 ...
Applies To: Microsoft Teams
Contact - Microsoft Support
Contact Microsoft Support. What's new. Surface Pro; Surface Laptop; Surface Laptop Studio 2
激活 Office - Microsoft 支持
解决激活错误. 如果 Microsoft 365 无法激活,其最后会变为未授权,且 Microsoft 365 的所有编辑功能都会被禁用。 Microsoft 可能由于多种原因变为未授权。
Applies To: Excel for Microsoft 365, Word for Microsoft 365, Outlook for Microsoft 365, PowerPoint for Microsoft 365, Access for Microsoft 365, OneNote for Microsoft 365, Publisher for Microsoft 365, Visio Plan 2, Excel 2021, Word 2021, Outlook 2021, PowerPoint 2021, Access 2021, Project Standard 2021, Publisher 2021, Visio Professional 2021, Visio Standard 2021, Office 2021, OneNote 2021, Excel 2019, Word 2019, Outlook 2019, PowerPoint 2019, Access 2019, Project Standard 2019, Publisher 2019, Visio Professional 2019, Visio Standard 2019, Office 2019, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, Access 2016, OneNote 2016, Publisher 2016, Office 2016, Microsoft 365 for home, Office for business, Office.com, Project for Office 365
COUNTIFS 函数 - Microsoft 支持
备注. 每个区域的条件一次应用于一个单元格。 如果所有的第一个单元格都满足其关联条件,则计数增加 1。 如果所有的第二个单元格都满足其关联条件,则计数再增加 1,依此类推,直到计算完所有单元格。
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, Excel Web App
Send feedback to Microsoft with the Feedback Hub app
Tip: If you encounter a problem on your Windows device, pressing the Windows logo key + F takes a screenshot, then opens the Feedback Hub app and automatically uploads the screenshot to the Feedback tab. Follow the on-screen instructions to detail the problem you've encountered.
Join a meeting in Microsoft Teams - Microsoft Support
To learn more, check out the Join a Teams meeting video. Join by link. All you need to join a Teams meeting is a link. Select Join the meeting now in your meeting invite to be taken to a page where you can choose to either join on the web or download the desktop app.. If you already have the Teams app, the meeting will open there automatically.
Applies To: Microsoft Teams