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How to open .TNEF file extension?

File Type : Transport Neutral Encapsulation Format File (Microsoft Corporation)
Compatible with (WinXP,Vista,Win7,Win8 and Win10)

Looking for a program to open .TNEF files?

"Windows unable to open a file!" is probably the most common error faced by millions every day. This is either because the program required to open a file is not available on your system or there may be other issues.

We recommend that you run a free scan to check for missing drivers.



What is .TNEF file extension?

.TNEF file extension is a known file type. This section tells you everything you need to know about this extension.
File generated by Microsoft Exchange email programs such as Outlook; appears as an email attachment for email clients that don't recognize Microsoft's proprietary TNEF format; may cause the text "application/ms-tnef" to appear in the email if the email client does not recognize Microsoft Exchange formatting. NOTE: Transport Neutral Encapsulation Format files with the extension ".tnef" are rare. Instead, unrecognized Exchange messages are usually seen with the filename Winmail.dat (.DAT file).
You can see a list of software programs below that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.

Software that can be used to open .TNEF files:

Microsoft Windows:
  • Microsoft Outlook 2013
  • Microsoft Outlook Express
Apple Mac OS X:
  • Apple Mail
  • Microsoft Outlook 2011