Tips to open DUN file

Can't open the DUN file? You are not the only one. Thousands of users face similar problems every day. Below you will find tips on how to open DUN files as well as a list of programs that support DUN files.

DUN file extension

File Name Dungeon Defenders Saved Game Format
File Developer Trendy Entertainment
File Category Game Files

The DUN file is supported on 4 operating systems. Depending on your operating system, you may need different software to handle the DUN files. Below is a summary of the number of programs that support and open the DUN file on each system platform.

Operating systems
  • 1
  • 1
  • 0
  • 1
  • 1
  • 0

What is DUN file?

The file with the extension DUN is the Game Files file type. It was designed by Trendy Entertainment. Game Files consists of 1509 similar files. Dungeon Defenders Saved Game Format is supported by 4 operating systems. Although it can be found with greater or lesser success on any operating system, it will only be useful on Android, iOS, Mac OS, Windows. Alternatively, you can use 3 other programs.

How to open DUN file?

The most common problem when using Dungeon Defenders Saved Game Format is that a specific DUN is not associated with the program. This is manifested by the fact that DUN files open in unusual applications or do not have an assigned program. This problem can be easily remedied.

The first thing you should do is just "doubleclick" on the DUN file icon you want to open. If the operating system has an appropriate application to support it and there is also an association between the file and the program, the file should be opened.

Step 1. Install Dungeon Defenders

An often overlooked issue is to make sure that Dungeon Defenders is installed on the computer. To do this, enter the name Dungeon Defenders into the system search engine. If it is not, installation may solve the problem, as most applications create file associations during installation. Later in this article you will find a list of programs that can open DUN files.

Step 2. Create association of Dungeon Defenders with DUN files

If, despite the installed application, the DUN file does not start in the Dungeon Defenders application, you must create a file association. This option is available from the level of Properties of a specific file available in the context menu. Information about the file and the program that the file is associated with are available here. Using the "Change" button we can set the program to handle this type. It may happen that in the next window there will be no appropriate program - however, this can be corrected with the "Browse" option where you should manually indicate the program location. The "always use the selected program ..." field will set the Dungeon Defenders application as the default for handling the DUN file.

Step 3. Update Dungeon Defenders to the latest version

The fault may also lie with the Dungeon Defenders program, it is possible that Dungeon Defenders Saved Game Format requires a newer version of the program.

Step 4. Check for the following problems with the DUN file

The problem may also be with the file itself if the above steps don't work. The most common file problems are:

The affected file may be 0 KB or smaller than expected. Usually this applies to DUN files downloaded from the Internet in case the download did not finish properly. The file should be downloaded again, making sure that the process has finished correctly.
The most common cause here is computer viruses. A quick virus scan using an up-to-date antivirus program should clear up any doubts. Some antivirus vendors also provide free online scanners. For the best results, we will scan the entire operating system, not just our DUN file. Sometimes virus-infected DUN files cannot be recovered, so make a backup in advance.
This can happen especially when the program is dynamically developed and the structure of the DUN files changes over time. These problems are known and are often very easy to fix using the software developers's website.
The file may be corrupted in a number of ways. Depending on the type of file, it is necessary to repair it accordingly. Sometimes the program itself has options to repair the most popular DUN file corruption.
The program can also signal the fact of encryption. The encrypted DUN files cannot be played on other computers than the one on which they were encrypted, they must be decrypted before using on another device.
Some operating systems do not allow file operations in certain locations, eg in system directories or directly on the system drive. The problem is only writing to the file, not reading it. It is best to move DUN to a different directory.
This problem usually affects more complex files. In this case, the DUN file is blocked by the first application to open it. Closing other programs should help. Sometimes it is necessary to wait a while before referencing the DUN file again. Antivirus programs or a backup being made may lock the file for a while without the user's knowledge. If nothing helps, please reset the device.