.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

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

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
.ULS	Microsoft Corporation	Data Files	NetMeeting User Location Service File
.LOL	Apple	Developer Files	LOLCODE Source Code FIle
.TXT	Sublime HQ Pty Ltd	Text Files	Plain Text File
.ESD	Microsoft Corporation	Uncommon Files	Windows Electronic Software Download File
.OXPS	Microsoft Corporation	Page Layout Files	OpenXPS File
.T	Holt Software	Developer Files	Turing Source Code File
.COVERAGE	Microsoft Corporation	Data Files	Visual Studio Code Coverage Report
.SOUNDS	id Software	Game Files	Quake 3 Engine Sound Definition File
.VDX	Microsoft Corporation	Data Files	Visio Drawing XML File
.SCM	Gimpel Software	Plugin Files	GIMP Script-Fu Script