MDJ file icon

MDJ File Extension

StarUML Model Format

What is MDJ file?

MDJ is a file extension commonly associated with StarUML Model Format files. MDJ files are supported by software applications available for devices running Windows. Files with MDJ extension are categorized as Text Files files. The Text Files subset comprises 418 various file formats. The software recommended for managing MDJ files is StarUML. On the official website of MKLab developer not only will you find detailed information about theStarUML software, but also about MDJ and other supported file formats.

Programs which support MDJ file extension

The following listing features MDJ-compatible programs. Files with MDJ extension, just like any other file formats, can be found on any operating system. The files in question may be transferred to other devices, be it mobile or stationary, yet not all systems may be capable of properly handling such files.

Programs that support MDJ file

Windows Windows

Updated: 09/19/2021

How to open file with MDJ extension?

Problems with accessing MDJ may be due to various reasons. On the bright side, the most encountered issues pertaining to StarUML Model Format files aren’t complex. In most cases they can be addressed swiftly and effectively without assistance from a specialist. We have prepared a listing of which will help you resolve your problems with MDJ files.

Step 1. Install StarUML software

Install software to open MDJ file The main and most frequent cause precluding users form opening MDJ files is that no program that can handle MDJ files is installed on user’s system. The solution to this problem is very simple. Download StarUML and install it on your device. Above you will find a complete listing of programs that support MDJ 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 StarUML website and download the installer.

Step 2. Verify the you have the latest version of StarUML

Update software that support file extension MDJIf the problems with opening MDJ files still occur even after installing StarUML, it is possible that you have an outdated version of the software. Check the developer’s website whether a newer version of StarUML is available. It may also happen that software creators by updating their applications add compatibility with other, newer file formats. The reason that StarUML cannot handle files with MDJ may be that the software is outdated. The most recent version of StarUML is backward compatible and can handle file formats supported by older versions of the software.

Step 3. Associate StarUML Model Format files with StarUML

After installing StarUML (the most recent version) make sure that it is set as the default application to open MDJ files. The method is quite simple and varies little across operating systems.

Associate software with MDJ file on Windows

The procedure to change the default program in Windows

  • Clicking the MDJ with right mouse button will bring a menu from which you should select the Open with option
  • Select Choose another app → More apps
  • Finally select Look for another app on this PC, point to the folder where StarUML is installed, check the Always use this app to open MDJ files box and conform your selection by clicking OK button
Associate software with MDJ file on Mac

The procedure to change the default program in Mac OS

  • Right-click the MDJ file and select Information
  • Find the Open with option – click the title if its hidden
  • Select the appropriate software and save your settings by clicking Change all
  • A message window should appear informing that This change will be applied to all files with MDJ extension. By clicking Continue you confirm your selection.

Step 4. Verify that the MDJ is not faulty

You closely followed the steps listed in points 1-3, but the problem is still present? You should check whether the file is a proper MDJ file. Being unable to access the file can be related to various issues.

Check MDJ file for viruses
1. Verify that the MDJ in question is not infected with a computer virus

Should it happed that the MDJ is infected with a virus, this may be that cause that prevents you from accessing it. Scan the MDJ file as well as your computer for malware or viruses. If the MDJ file is indeed infected follow the instructions below.

2. Check whether the file is corrupted or damaged

Did you receive the MDJ file in question from a different person? Ask him/her to send it one more time. During the copy process of the file errors may occurred rendering the file incomplete or corrupted. This could be the source of encountered problems with the file. When downloading the file with MDJ extension from the internet an error may occurred resulting in incomplete file. Try downloading the file again.

3. Verify whether your account has administrative rights

Some files require elevated access rights to open them. Log out of your current account and log in to an account with sufficient access privileges. Then open the StarUML Model Format file.

4. Check whether your system can handle StarUML

If the systems has insufficient resources to open MDJ files, try closing all currently running applications and try again.

5. Verify that your operating system and drivers are up to date

Regularly updated system, drivers, and programs keep your computer secure. This may also prevent problems with StarUML Model Format files. Outdated drivers or software may have caused the inability to use a peripheral device needed to handle MDJ files.

Do you want to help?

If you have additional information about the MDJ 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 MDJ file.

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