.DEF File Overview

File Extension:	DEF
File Type Description:	Module Definition File
File Type Developer:	Microsoft Corporation
Primary Associated Software:	Microsoft Visual Studio
Primary Software Developer:	Microsoft Corporation

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What is File Extension DEF?

Module Definition File files were originally developed by Microsoft Corporation for the Microsoft Visual Studio software application. Visitor data analysis shows that these Module Definition File files are typically seen on Windows 10 user machines from United States. Statisically, these users are most likely running the Google Chrome internet browser.

Associated Developers and Software

	SmartWare II by SmartWare Corporation
	Microsoft Visual C++ by Microsoft Corporation
	IObit Malware Fighter by IObit
	Microsoft Visual Studio by Microsoft Corporation
	Elecbyte M.U.G.E.N by Elecbyte

Top DEF User Languages

Top DEF 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
	Linux

Other File Types Related to DEF Files

Extension	File Type Developer	File Category	File Type Description
.STM	Microsoft Corporation	Data Files	Exchange Streaming Media File
.UG	Autodesk, Inc.	Vector Image Files	Drawing File
.HPP	Microsoft Corporation	Developer Files	C++ Header File
.LIST	Open Source	Data Files	APT List File
.LICENSE	Unknown Developer	Data Files	Generic License File
.ZTD	Microsoft Corporation	Game Files	Zoo Tycoon Data Archive
.VSPX	Microsoft Corporation	Developer Files	Visual Studio Performance Report File
.WTX	Stefan Hagel	Text Files	Text Document
.BLB	SourceForge	Game Files	Interactive Fiction Package Game File
.DML	Sybase, Inc	Web Files	DynaScript File