UDK File Extension

What is UDK file?

UDK filename suffix is mostly used for Unreal Engine Map Format files. Unreal Engine Map Format specification was created by Epic Games. UDK file format is compatible with software that can be installed on Windows system platform. UDK file format, along with 1509 other file formats, belongs to the Game Files category. Users are advised to use Unreal Development Kit software for managing UDK files, although 1 other programs can also handle this type of file. Unreal Development Kit software was developed by Epic Games, Inc., and on its official website you may find more information about UDK files or the Unreal Development Kit software program.

Programs which support UDK file extension

Below is a table that list programs that support UDK files. UDK files can be encountered on all system platforms, including mobile, yet there is no guarantee each will properly support such files.

How to open file with UDK extension?

There can be multiple causes why you have problems with opening UDK files on given system. What is important, all common issues related to files with UDK extension can be resolved by the users themselves. The process is quick and doesn’t involve an IT expert. The following is a list of guidelines that will help you identify and solve file-related problems.

Step 1. Get the Unreal Development Kit

Problems with opening and working with UDK files are most probably having to do with no proper software compatible with UDK files being present on your machine. The most obvious solution is to download and install Unreal Development Kit or one to the listed programs: Unreal Tournament 3. The full list of programs grouped by operating systems can be found above. If you want to download Unreal Development Kit installer in the most secured manner, we suggest you visit Epic Games, Inc. website and download from their official repositories.

Step 2. Verify the you have the latest version of Unreal Development Kit

You still cannot access UDK files although Unreal Development Kit is installed on your system? Make sure that the software is up to date. Software developers may implement support for more modern file formats in updated versions of their products. The reason that Unreal Development Kit cannot handle files with UDK may be that the software is outdated. The most recent version of Unreal Development Kit is backward compatible and can handle file formats supported by older versions of the software.

Step 3. Set the default application to open UDK files to Unreal Development Kit

If you have the latest version of Unreal Development Kit installed and the problem persists, select it as the default program to be used to manage UDK 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

• Choose the Open with entry from the file menu accessed by right-mouse clicking on the UDK file
• 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 Unreal Development Kit installation folder. Confirm by checking Always use this app to open UDK files box and clicking OK button.

The procedure to change the default program in Mac OS

• Right-click the UDK file and select Information
• Proceed to the Open with section. If its closed, click the title to access available options
• Select Unreal Development Kit and click Change for all...
• If you followed the previous steps a message should appear: This change will be applied to all files with UDK extension. Next, click the Continue button to finalize the process.

Step 4. Verify that the UDK 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 UDK file. Being unable to access the file can be related to various issues.

1. Verify that the UDK in question is not infected with a computer virus

If the file is infected, the malware that resides in the UDK file hinders attempts to open it. Scan the UDK file as well as your computer for malware or viruses. If the UDK file is indeed infected follow the instructions below.

2. Check whether the file is corrupted or damaged

If you obtained the problematic UDK file from a third party, ask them to supply you with another copy. The file might have been copied erroneously and the data lost integrity, which precludes from accessing the file. When downloading the file with UDK 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 in using an administrative account and see If this solves the problem.

4. Verify that your device fulfills the requirements to be able to open Unreal Development Kit

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

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

Regularly updated system, drivers, and programs keep your computer secure. This may also prevent problems with Unreal Engine Map Format files. It is possible that one of the available system or driver updates may solve the problems with UDK files affecting older versions of given software.

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