.TNEF File Overview

File Extension:	TNEF
File Type Description:	Transport Neutral Encapsulation Format
File Type Developer:	Microsoft Corporation
Primary Associated Software:	Microsoft Outlook Express
Primary Software Developer:	Microsoft Corporation

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TNEF

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Home File Types Uncommon Files TNEF

What is File Extension TNEF?

Microsoft Corporation developed the Transport Neutral Encapsulation Format file type when the Microsoft Outlook was initially released. According to our internal data, Transport Neutral Encapsulation Format files are most popular with users in United States, with a majority of them running Windows 10. In most cases, these users are surfing the internet using the Google Chrome browser.

Associated Developers and Software

	Microsoft Outlook by Microsoft Corporation
	Apple Mail by Apple
	Microsoft Outlook Express by Microsoft Corporation

Top TNEF User Languages

Top TNEF File User Browsers

Desktop Friendly?

Mobile Friendly?

Top User Operating Systems


Windows 10	Windows 11	Windows 6	Windows 8.1

Associated Operating Systems

	Windows
	Mac
	iOS

Other File Types Related to TNEF Files

Extension	File Type Developer	File Category	File Type Description
.KTF	Microsoft Corporation	Text Files	Microsoft Dynamics AX Kernel Text Data
.XEE	Microsoft Corporation	Settings Files	Microsoft Expression Encoder Preset
.MAN	Unknown Developer	Text Files	Unix Manual
.DGT	Interscape	Data Files	Digital Gallery File
.STG	Microsoft Corporation	Backup Files	ActiveSync Backup File
.HPP	Microsoft Corporation	Developer Files	C++ Header File
.POW	Microsoft Corporation	Settings Files	Microsoft Windows Power Schema
.MARKDOWN	Various Developers	Developer Files	Markdown Documentation File
.SE	Unknown Developer	Text Files	Shuttle Document
._VCPPXSLN80	Microsoft Corporation	Data Files	Microsoft Visual Studio File