.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

	IObit Malware Fighter by IObit
	Elecbyte M.U.G.E.N by Elecbyte
	Microsoft Visual C++ by Microsoft Corporation
	SmartWare II by SmartWare Corporation
	Microsoft Visual Studio by Microsoft 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
.SEG	SEG (The Society of Exploration Geophysicists)	Data Files	SEG-2 Data File
.PPSM	Microsoft Corporation	Data Files	PowerPoint Open XML Macro-Enabled Slide Show
.OLS	Microsoft Corporation	Data Files	Microsoft Office List Shortcut
.XLSMHTML	Microsoft Corporation	Spreadsheet Files	Microsoft Excel MIME HTML Spreadsheet
.PAG	Microsoft Corporation	Data Files	Visual Basic Property PAGe File
.VAM	Microsoft Corporation	Developer Files	Visual Studio Common Tools Vanalyzer Project Item
.WCF	Microsoft Corporation	Data Files	WebEx Saved Chat Session
.JAV	Oracle Corporation	Developer Files	Java Source Code
.JMH	Unknown Developer	Raster Image Files	JPEG File Interchange Format
.KOR	Epic Games	Game Files	Unreal Engine Language Localization