This article is for Outlook Web App, which is used by organizations that manage email servers running Exchange Server 2013 or 2010. If you're using Microsoft 365, or Exchange Server 2016 or 2019, your email program is Outlook on the web.

Note: In earlier versions of Outlook, IMAP accounts also used an Outlook Data File (.pst).In Outlook 2016 and Outlook for Microsoft 365, IMAP accounts use Offline Outlook Data Files (.ost). You can also use an Outlook Data File (.pst) to backup or export items from any type of email account.

在"安全性"选项卡上，选择"自定义级别"，ActiveX控件和插件"下，执行下列操作之一： 通过选择"启用"ActiveX自动提示控件。 允许 Internet Explorer" 启用"，在不使用外部媒体播放器的网页上显示 视频和动画。 如果希望Internet Explorer，ActiveX"启用"或"提示"来下载已签名的控件。

Using the new Microsoft Teams, you can now be logged into multiple work, school, and personal accounts on the Windows desktop app. Easily switch back and forth between organizations, including guest organizations. See and change your notification settings for your various accounts.

如果已选择“共享”按钮，其他人会收到一封电子邮件，邀请他们打开文件。他们可以选择链接打开工作簿。 将打开 Web 浏览器，并在 Excel 网页版 中打开工作簿。 如果他们想要使用 Excel 桌面应用进行共同创作，可以选择“在桌面应用中编辑”。但是需要使用支持共同创作的 Excel 应用版本。

Import a text file by opening it in Excel. You can open a text file that you created in another program as an Excel workbook by using the Open command. Opening a text file in Excel does not change the format of the file — you can see this in the Excel title bar, where the name of the file retains the text file name extension (for example, .txt or .csv).

You can create a simple formula to add, subtract, multiply or divide values in your worksheet. Simple formulas always start with an equal sign (=), followed by constants that are numeric values and calculation operators such as plus (+), minus (-), asterisk (*), or forward slash (/) signs.The following is an example of a simple formula.

键入时更正拼写 “自动完成”和“自动更正”都可以在键入过程中帮助修复键入错误。 “自动完成”默认开启，有助于在键入时通过匹配其他单元格中的条目来保持准确性，但不会检查单元格中的单个字词，“自动完成”在创建公式时非常方便。 “自动更正”可修复公式文本、工作表控件、文本框 ...

To add another account to OneDrive on your computer. If you already have a personal OneDrive account set up, you can only add work or school accounts.

Windows 10 Windows 10, version 1607, all editions Windows Server 2016, all editions Win 10 Ent LTSC 2019 Win 10 IoT Ent LTSC 2019 Windows 10 IoT Core LTSC Windows Server 2019 Windows 10 Enterprise and Education, version 21H2 Windows 10 IoT Enterprise, version 21H2 Windows 10 Enterprise Multi-Session, version 21H2 Windows 10, version 22H2, all editions Windows 11 version 21H2, all editions ...