MS-TNEF file format description

MS-TNEF file format

We made this page to help you understand how to work with MS-TNEF files. Here, you can find info on software that can handle these files. It includes simple programs for opening and converting them.

Learn about the MS-TNEF file and its functions here!

We also explain how to convert them into other types. It's simple and hassle-free. For opening or changing MS-TNEF files, this page offers all the tools you need.

#1 MS Transport Neutral Encapsulation Format

The MS-TNEF file is categorized under Data. It is associated with Microsoft Office Outlook, serving as a MS Transport Neutral Encapsulation Format. Transport Neutral Encapsulation Format or TNEF is a proprietary email attachment format used by Microsoft Outlook and Microsoft Exchange Server. Visit the website of Microsoft Office Outlook for a detailed description of the MS-TNEF format.

Application:Microsoft Office Outlook
Category:Data files
Magic:- / -

MS Transport Neutral Encapsulation Format related extensions

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Windows can't open your MS-TNEF file?

When you try to open a file by double-clicking it, Windows looks at the file's name to figure out what to do. If Windows doesn't know the file type, it'll ask you to choose an app to open this MS-TNEF file.

To set the MS-TNEF file association in Windows 11, you can follow these steps

  1. Open the Settings app by clicking on the Start menu and selecting the gear icon.
  2. In the Settings app, click on System and then select Apps from the left-hand side menu.
  3. Scroll down and click on the Default apps option.
  4. In the Default apps section, you will find various categories. They include Email, Web browser, and Music player.
  5. Locate the category that matches the file type you want to associate. For example, choose Photos for image files, or Video player for video files.
  6. Click on the current default app listed under the category. A list of available apps will appear.
  7. Choose the app you want to set as the default for that file type. If the app you want is not listed, click on More apps to see more options. Or, click on Look for an app in the Microsoft Store to search for apps.
  8. After selecting the app, it will become the default choice for opening files of that type.

It's worth mentioning that you don't always need to set MS-TNEF file association. Many apps can open files. They don't need a specific file association to be set.

Handle MS-TNEF files with care

Exercise caution when handling MS-TNEF files from unknown sources. Files from certain sources can threaten your computer's security. They might contain malware, viruses, or harmful software. To minimize risks, avoid downloading or opening unfamiliar MS-TNEF files. Use trusted antivirus software to scan files from unknown sources before opening.

If you find the information on this MS-TNEF page useful, please feel free to link to this page. >> MS-TNEF file