Did you find or received DEF file and your computer failed to open it? Below we will explain what is DEF file extension and how you can open it.
DEF is a file extension associated with Module-Definition files .
In most cases your computer should know what software program should be used to open different file types and extensions like DEF. When you double click on the DEF file format, it should open with appropriate software program. If you downloaded or received DEF files for the first time and your system failed to open it then try free file viewers available on the internet after doing enough research not to fall prey to malware.
Finally, if Windows is unable to open file extension DEF you may have registry related errors or may not have the appropriate program installed. We strongly recommend that you run a registry scan.
You are currently viewing the detail page for DEF file ext. This page contains a detailed description of the DEF file type, software tools to help resolve file association errors in the Windows registry together with relevant system utility applications and other related information.