.DEF File Extension

Are you having difficulty opening a file that ends with .DEF? Such files can be executed only by certain programs. If you cannot open the .DEF file, it can be due to the following reasons: either you do not have an appropriate program to open it, or your file association is corrupted. For more information about this extension, please read the article below.

What is a .DEF file?

.DEF file belongs to the category of Developer Files used in operating systems such as Windows 11, 10, Windows 7, Windows 8 / 8.1, Windows Vista, Windows XP.

.DEF def
Developer: N/A
File Type: Module-Definition File
Format: N/A

.DEF file is associated with Module-Definition File developed by N/A, has a N/A Format and belongs to Developer Files category.


IOBit Malware Fighter Definitions File

.DEF file belongs to the category of Data Files used in operating systems such as Windows 11, 10, Windows 7, Windows 8 / 8.1, Windows Vista, Windows XP.

.DEF def
Developer: IObit
File Type: IOBit Malware Fighter Definitions File
Category: Data Files
Format: Binary

.DEF file is associated with IOBit Malware Fighter Definitions File developed by IObit, has a Binary Format and belongs to Data Files category.


SmartWare II Data File

.DEF file belongs to the category of Spreadsheet Files used in operating systems such as Windows 11, 10, Windows 7, Windows 8 / 8.1, Windows Vista, Windows XP.

.DEF def
Developer: SmartWare
File Type: SmartWare II Data File
Format: N/A

.DEF file is associated with SmartWare II Data File developed by SmartWare, has a N/A Format and belongs to Spreadsheet Files category.


M.U.G.E.N. Character Definition File

.DEF file belongs to the category of Game Files used in operating systems such as Windows 11, 10, Windows 7, Windows 8 / 8.1, Windows Vista, Windows XP.

.DEF def
Developer: Elecbyte
File Type: M.U.G.E.N. Character Definition File
Category: Game Files
Format: Text

.DEF file is associated with M.U.G.E.N. Character Definition File developed by Elecbyte, has a Text Format and belongs to Game Files category.


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