Files with TNF extension are email attachments in Microsoft's Transport Neutral Encapsulation Format. Used by Exchange Server.

Detailed description

Software that works with tnf file extension

Add comment

Bookmark & share this page with others:

TNF file extension - Transport Neutral Encapsulation Format file

What is tnf file? How to open tnf files?

File type specification:

Email related data file type icon Email related data file type

The TNF file extension is mainly related to Microsoft's Transport Neutral Encapsulation Format. TNEF is a proprietary email attachment format used by Microsoft Outlook and Microsoft Exchange Server.

MIME: Application/MS-TNE

The default software associated to tnf file type:

Microsoft Exchange Server icon

Microsoft Corporation logoMicrosoft Exchange Server  Microsoft Windows software

Company or developer:
Microsoft Corporation

Microsoft Exchange Server is server side service used to manage electronic mails, calendaring, contacts and tasks. Microsoft Exchange is supported by variety of desktop e-mail clients (Microsoft Outlook, Apple Mail, Thunderbird) as well as smart mobile e-mail clients (Windows Mobile, Windows Phone, Android, iOS).

Help how to open TNF files:

This file type is not meant to be opened directly, there is no software that could open and work with it directly, or there is no information available in public sources about opening this file type. This is usually the case of some internal data files, caches, temporary files etc.

How to convert file with extension TNF:

As far as we know, this .tnf file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.

List of software applications associated to the .tnf file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux etc.) and possible program actions
that can be done with the file
: like open tnf file, edit tnf file, convert tnf file, view tnf file, play tnf file etc. (if exist software for corresponding action in's database).

Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is ableto perform the specified software action, such as opening, editing or converting tnf files.

  • Open tnf file
  • Create tnf file
  • Others tnf file

Software that open tnf file - Transport Neutral Encapsulation Format file

Click on the link to get more information about listed programs for open tnf file action.

Microsoft Windows:

Main software associated with tnf file by default:
Microsoft Exchange Server small icon Microsoft Exchange Server
Other suggested software:
Microsoft Outlook small icon Microsoft Outlook

Previous file extension
TBB file extension > Email related data file types

Next file extension
file extension VCARD


Follow us!

Enter any file extension without dot (e.g. pdf)
Search for file extension details and associated application(s)

RSS feed