Details of extension .edmx
2 extension(s) and 0 alias(es) in our database
Below, you can find answers to the following questions:
- What is the .edmx file?
- Which program can create the .edmx file?
- Where can you find a description of the .edmx format?
- What can convert .edmx files to a different format?
- Which MIME-type is associated with the .edmx extension?

ADO.NET Entity Data Model Designer Data

Visual Studio Entity Data Model
Other types of files may also use the .edmx file extension. If you have helpful information about .edmx extension, write to us!
Is it possible that the filename extension is misspelled?
We found the following similar extensions in our database:
The .edmx filename extension is often given incorrectly!
According to the searches on our site, these misspellings were the most common in the past year:
Can't open a .edmx file?
If you want to open a .edmx file on your computer, you just need to have the appropriate program installed. If the .edmx association isn't set correctly, you may receive the following error message:
Windows can't open this file:
File: example.edmx
To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select from a list of programs that are installed on your computer.
To change file associations:
- Right-click a file with the extension whose association you want to change, and then click Open With.
- In the Open With dialog box, click the program whith which you want the file to open, or click Browse to locate the program that you want.
- Select the Always use the selected program to open this kind of file check box.
Supported operating systems
Windows Server 2003/2008/2012/2016, Windows 7, Windows 8, Windows 10, Linux, FreeBSD, NetBSD, OpenBSD, Mac OS X, iOS, Android