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3 Solutions to Open DEF Files
1. Download the Correct Software
You can download Unknown Apple II File, ADS Source Code, or Geoworks Assembly Header File to open your DEF file. This will ensure that you view the file exactly as intended, unless the DEF file is corrupt. You may also Google to find out if other software packages use the same file format, and download that.
2. Create the Correct File Associations
Navigate to your file associations settings on your Windows or Mac computer, and create a file association for DEF files. Depending on your operating system, you will right-click on the DEF file, select "Open With" and select either Unknown Apple II File, ADS Source Code, Geoworks Assembly Header File, or a similar software program from the installed programs on your PC.
3. Get File Magic
File Magic is a universal software viewer that enables you to open and view the contents of some DEF files. It may help you to view DEF files, even if it is in a binary format.
If you have tried all of the other solutions for opening DEF files and nothing else works, it may be worthwhile to try a universal file viewer such as File Magic. File Magic is so easy to use that you'll kick yourself for not trying it sooner. Download File Magic now from the Microsoft Store and open your DEF files!
3. Try a Universal File Viewer
If you have tried all of the other solutions for opening DEF files and nothing else works, it may be worthwhile to try a universal file viewer.
| Software | Developer |
|---|---|
| Unknown Apple II File | found on Golden Orchard Apple II CD Rom |
| ADS Source Code | Autodesk Inc. |
| Geoworks Assembly Header File | Windows Programmer |
| DbForm Document Definiton | Version One Ltd |
| Module Definition/Configuration File | Microsoft Developer |
| RCSWin New Job File (RCS Corporation) | Default |
| Visual C++ Definition | Unknown |
| TLink - Wlink - Others Linker Definition | Windows Software |
| Modula-2 Definition Module File | Windows Programmer |
| SGML Tag Definition | Microsoft Developer |
| SmartWare II Data File | Microsoft Developer |
| Defaults | Microsoft Developer |
| Data Entry/Review Module | DATAIR Employee Benefit Systems Inc. |
| C++ Definition | Windows Programmer |
| OPTLINK Digital Mars Module Definition File | Digital Mars |
| AniSprite | CompuPhase |
| Definitions | Windows Programmer |
| ArcView Defaults File | ESRI |
| 3D Fassade Plus Define Module | Windows Programmer |
Download File Magic today and enjoy the convenience of viewing all types of files the easy way.
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1File types that are unsupported can be opened in binary format.
