EDMX File Extension

EDMX file icon
ADO.NET Entity Data Model Designer Format

What is EDMX file?

EDMX is a file extension commonly associated with ADO.NET Entity Data Model Designer Format files. Microsoft defined the ADO.NET Entity Data Model Designer Format format standard. EDMX files are supported by software applications available for devices running Windows. EDMX file belongs to the Developer Files category just like 1009 other filename extensions listed in our database. The most popular software that supports EDMX files is Microsoft Visual Studio. Microsoft Visual Studio software was developed by Microsoft Corporation, and on its official website you may find more information about EDMX files or the Microsoft Visual Studio software program.

Programs which support EDMX file extension

Programs that can handle EDMX files are as follows. Files with EDMX suffix can be copied to any mobile device or system platform, but it may not be possible to open them properly on target system.

Programs that support EDMX file

How to open file with EDMX extension?

Problems with accessing EDMX may be due to various reasons. What is important, all common issues related to files with EDMX extension can be resolved by the users themselves. The process is quick and doesn’t involve an IT expert. We have prepared a listing of which will help you resolve your problems with EDMX files.

Step 1. Download and install Microsoft Visual Studio

The main and most frequent cause precluding users form opening EDMX files is that no program that can handle EDMX files is installed on user’s system. The solution is straightforward, just download and install Microsoft Visual Studio. Above you will find a complete listing of programs that support EDMX files, classified according to system platforms for which they are available. One of the most risk-free method of downloading software is using links provided by official distributors. Visit Microsoft Visual Studio website and download the installer.

Step 2. Verify the you have the latest version of Microsoft Visual Studio

If you already have Microsoft Visual Studio installed on your systems and EDMX files are still not opened properly, check if you have the latest version of the software. Software developers may implement support for more modern file formats in updated versions of their products. The reason that Microsoft Visual Studio cannot handle files with EDMX may be that the software is outdated. All of the file formats that were handled just fine by the previous versions of given program should be also possible to open using Microsoft Visual Studio.

Step 3. Set the default application to open EDMX files to Microsoft Visual Studio

If the issue has not been solved in the previous step, you should associate EDMX files with latest version of Microsoft Visual Studio you have installed on your device. The process of associating file formats with default application may differ in details depending on platform, but the basic procedure is very similar.

The procedure to change the default program in Windows

  • Clicking the EDMX with right mouse button will bring a menu from which you should select the Open with option
  • Select Choose another app → More apps
  • To finalize the process, select Look for another app on this PC entry and using the file explorer select the Microsoft Visual Studio installation folder. Confirm by checking Always use this app to open EDMX files box and clicking OK button.

The procedure to change the default program in Mac OS

  • Right-click the EDMX file and select Information
  • Open the Open with section by clicking its name
  • From the list choose the appropriate program and confirm by clicking Change for all....
  • A message window should appear informing that This change will be applied to all files with EDMX extension. By clicking Continue you confirm your selection.

Step 4. Ensure that the EDMX file is complete and free of errors

Should the problem still occur after following steps 1-3, check if the EDMX file is valid. Problems with opening the file may arise due to various reasons.

1. The EDMX may be infected with malware – make sure to scan it with an antivirus tool.

Should it happed that the EDMX is infected with a virus, this may be that cause that prevents you from accessing it. It is advised to scan the system for viruses and malware as soon as possible or use an online antivirus scanner. If the scanner detected that the EDMX file is unsafe, proceed as instructed by the antivirus program to neutralize the threat.

2. Ensure the file with EDMX extension is complete and error-free

Did you receive the EDMX file in question from a different person? Ask him/her to send it one more time. It is possible that the file has not been properly copied to a data storage and is incomplete and therefore cannot be opened. If the EDMX file has been downloaded from the internet only partially, try to redownload it.

3. Check if the user that you are logged as has administrative privileges.

Sometimes in order to access files user need to have administrative privileges. Switch to an account that has required privileges and try opening the ADO.NET Entity Data Model Designer Format file again.

4. Check whether your system can handle Microsoft Visual Studio

If the system is under havy load, it may not be able to handle the program that you use to open files with EDMX extension. In this case close the other applications.

5. Check if you have the latest updates to the operating system and drivers

Up-to-date system and drivers not only makes your computer more secure, but also may solve problems with ADO.NET Entity Data Model Designer Format file. Outdated drivers or software may have caused the inability to use a peripheral device needed to handle EDMX files.

Do you want to help?

If you have additional information about the EDMX file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on EDMX file.

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