.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
 | Microsoft Visual C++ by Microsoft Corporation |
 | IObit Malware Fighter by IObit |
 | Elecbyte M.U.G.E.N by Elecbyte |
 | Microsoft Visual Studio by Microsoft Corporation |
 | SmartWare II by SmartWare Corporation |
Top DEF User Languages
Top DEF File User Browsers
Desktop Friendly?
Mobile Friendly?
Most Popular DEF File Countries
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 |
|---|---|---|---|
| .PRD | SoftMaker Software | Data Files | SoftMaker Presentations Document |
| Microsoft Corporation | Uncommon Files | Outlook Express Email Message | |
| .WWP | Microsoft Corporation | Settings Files | Microsoft Works Wizards File |
| .SND | Open Source | Audio Files | Sound File |
| .B!K | Microsoft Corporation | Data Files | Microsoft Flight Simulator Scenery File |
| .HWOF | Microsoft Corporation | Data Files | Microsoft Office For Mac Help File |
| ._SLN60 | Microsoft Corporation | Data Files | Microsoft Visual Studio File |
| .FAV | Microsoft Corporation | Settings Files | Microsoft Outlook Bar-Shortcut |
| .DIF | Microsoft Corporation | Data Files | Data Interchange Format |
| .BTM | Microsoft Corporation | Data Files | BizTalk Map File |
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