How to open .tnef file format?

The probably reason why you are at this website is a problem with opening .tnef file. The full name of the file is Transport Neutral Encapsulation Format. If the double-click on the file’s icon shows you a message that additional programs are needed to open the file, you’ll find the list of helpful programs in the bottom of the page.The developer of this format is Microsoft.

.tnef file extension (Transport Neutral Encapsulation Format)

Category Developer/Producer File description Popularity
Misc Files Microsoft Transport Neutral Encapsulation Format
Programs using this file extension: .tnef
ADS OS Software
  • Microsoft Outlook 2013
  • Microsoft Outlook Express
  • Apple Mail
  • Microsoft Outlook 2011

The file extension .tnef can be used by another programs. If you have some useful information about .tnef file type that may help other users, please send them to us and we’ll update our database.

Visiting our website you are probably asking yourself:
  • What application can open .tnef file?
  • How to open .tnef file?
  • What is .tnef file?
  • How can I convert .tnef file?
  • Where can I find informations about .tnef file extension?
We hope we have given you enough informations about this file type. Otherwise you can search some informations about .tnef extension on or