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Details of extension .tnf

0 extension(s) and 1 alias(es) in our database

Below, you can find answers to the following questions:

  • What is the .tnf file?
  • Which program can create the .tnf file?
  • Where can you find a description of the .tnf format?
  • What can convert .tnf files to a different format?
  • Which MIME-type is associated with the .tnf extension?
Transport Neutral Encapsulation Format .tnef file icon

Transport Neutral Encapsulation Format

The TNEF file is a Transport Neutral Encapsulation Format file. Transport Neutral Encapsulation Format (TNEF) is a Microsoft proprietary method for encoding Rich Text Format (RTF) messages sent across the Internet. A TNEF-encoded message contains a plain text version of the message, an attachment that contains the RTF version, and any OLE objects such as pictures or other attachments that were sent with the message.
Category: Data files
Program name: -
Mime-type: application/octet-stream
Magic bytes (HEX): -
Magic string (ASCII): -
Related extensions:
.mlog Microsoft Outlook Message Log
.dbx Microsoft Outlook Express Folder Database
.eml Microsoft Outlook Express E-Mail
.kfl Microsoft Outlook Known Feed List
.bdr Microsoft Exchange Non-Delivery Report Body

Other types of files may also use the .tnf file extension. If you have helpful information about .tnf extension, write to us!

Is it possible that the filename extension is misspelled?

We found the following similar extensions in our database:

.tne Manga Studio Tone
.tgf Stonevoice Translator Tag Data
.gnf GluonPilot Navigation File
.tn Tracor Northern Image
.thf PCAnywhere Thin Host File
.tbf Trellian Button Factory Data

The .tnf filename extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

rnf (1), tnv (1), nf (1), tnr (1), gnf (1), tne (1), tnc (1), tn (1), tjf (1), tgf (1), tbf (1), ntf (1), tnt (1), hnf (1), tng (1)

Can't open a .tnf file?

If you want to open a .tnf file on your computer, you just need to have the appropriate program installed. If the .tnf association isn't set correctly, you may receive the following error message:

Windows can't open this file:

File: example.tnf

To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select from a list of programs that are installed on your computer.

To change file associations:

  • Right-click a file with the extension whose association you want to change, and then click Open With.
  • In the Open With dialog box, click the program whith which you want the file to open, or click Browse to locate the program that you want.
  • Select the Always use the selected program to open this kind of file check box.

Supported operating systems

Windows Server 2016/2019/2022, Windows 7, Windows 8, Windows 10, Windows 11, Linux, Mac OS X, macOS, iOS, Android