All Outlook Data Files (.pst) and Offline Data Files (.ost) are listed along with the name of the account the files are associated with. If you cannot open your Outlook data file or suspect that the file is damaged, use the Inbox Repair tool (scanpst.exe) to repair errors in the file.

This feature allows you to access your previously downloaded or synchronized email messages, calendar information, contacts, and tasks without an internet connection. Certain types of accounts, such as POP accounts, store their information in the Outlook Data File (.pst) format.

One of the most common ways of transmitting computer viruses is through file attachments. To help protect you and your recipients against computer viruses, Outlook blocks the sending and receiving of certain types of files (such as .exe and certain database files) as attachments.

By setting up MFA, you add an extra layer of security to your Microsoft 365 account sign-in. For example, you first enter your password and, when prompted, you also type a dynamically generated verification code provided by an authenticator app or sent to your phone.

A factor in authentication is a way of confirming your identity when you try to sign in. For example, a password is one kind of factor, it's a thing you know. The three most common kinds of factors are: Something you know - Like a password, or a memorized PIN.

Save a message as a file on your computer or in the cloud. In Mail, from the message list, select the message you want to save so it opens in the reading pane, or double-click the message to open to open it in a new window. From the message header, select More actions > Save as.

You can share your documents for free using Microsoft 365, regardless of whether you or the recipient have a subscription or a Microsoft account. The act of sharing maybe successful, however, the recipient may not be able to open the file because of the Sensitivity label on it.

If you're not on a team and want to create one, see Onboard your teams. Select a channel and explore the Conversations, Files, and other tabs. For more info, see Teams and channels. Next: Chat and share files in Teams. Learn how to log in to Microsoft Teams using our step-by-step guide.

编辑或更改 PDF 文件. 可移植文档格式 (PDF) 是用于共享最终版本文件的一种通用格式。. 若要在通过 Office 程序（如 Excel 或 Publisher）创建的 PDF 中添加或编辑文本，请首先从原始 Office 文件开始着手。. 在 Office 程序中打开该文件，进行所需的更改，然后重新 将 ...

了解如何将 PDF 格式的文件作为附件插入 Office 文件中。. 可以调整对象的大小，但在插入对象后无法对其进行编辑。. 需要安装 Adobe Acrobat 或 Abode Reader 才能查看或读取 PDF 文件。. 注意: 如果想要将 PDF 文件的内容插入到 Office 文件中，相对于直接将 PDF 作为附件 ...