Missing_File

How to open a file with .DEF extension?

File Type : OPTLINK Digital Mars Module Definition File (Digital Mars)
Compatible with (Win10, Win8, Win7, Vista and WinXP)

You'll need a new app to open this .DEF file

Searching for the right program to open .DEF files?

"You'll need a new app to open this file" is probably the most common error faced by millions of Windows users every day. This is either because the program required to open a file is not available on your system or there may be other issues.

We recommend that you run a free scan to check for missing drivers.

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What is .DEF file extension?

Lists the exports and attributes of a program to be linked by an application linker; used in software development when creating a DLL. DEF files are used by Microsoft Visual C++, a component of Microsoft Visual Studio, as well as other C++ development software.
You can see a list of software programs here on www.easyfileopener.org that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.

Software that can be used to open DEFfiles:

  • Microsoft Visual Studio 2013