DDK File Extension

DDK file icon
IBM OS/2 Saved SKF
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What is DDK file?

DDK filename suffix is mostly used for IBM OS/2 Saved SKF files. IBM OS/2 Saved SKF format was developed by IBM. DDK files are supported by software applications available for devices running . DDK file format, along with 195 other file formats, belongs to the Disk Image Files category. OS/2 is by far the most used program for working with DDK files.

Programs which support DDK file extension

The following listing features DDK-compatible programs. DDK files can be encountered on all system platforms, including mobile, yet there is no guarantee each will properly support such files.

Programs that support DDK file

How to open file with DDK extension?

Problems with accessing DDK may be due to various reasons. On the bright side, the most encountered issues pertaining to IBM OS/2 Saved SKF files aren’t complex. In most cases they can be addressed swiftly and effectively without assistance from a specialist. The list below will guide you through the process of addressing the encountered problem.

Step 1. Download and install OS/2

Problems with opening and working with DDK files are most probably having to do with no proper software compatible with DDK files being present on your machine. To address this issue, go to the OS/2 developer website, download the tool, and install it. It is that easy Above you will find a complete listing of programs that support DDK files, classified according to system platforms for which they are available. The safest method of downloading OS/2 installed is by going to developer’s website () and downloading the software using provided links.

Step 2. Verify the you have the latest version of OS/2

If the problems with opening DDK files still occur even after installing OS/2, it is possible that you have an outdated version of the software. Check the developer’s website whether a newer version of OS/2 is available. Sometimes software developers introduce new formats in place of that already supports along with newer versions of their applications. If you have an older version of OS/2 installed, it may not support DDK format. The most recent version of OS/2 is backward compatible and can handle file formats supported by older versions of the software.

Step 3. Set the default application to open DDK files to OS/2

If the issue has not been solved in the previous step, you should associate DDK files with latest version of OS/2 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

  • Choose the Open with entry from the file menu accessed by right-mouse clicking on the DDK file
  • Select Choose another app → More apps
  • Finally select Look for another app on this PC, point to the folder where OS/2 is installed, check the Always use this app to open DDK files box and conform your selection by clicking OK button

The procedure to change the default program in Mac OS

  • From the drop-down menu, accessed by clicking the file with DDK extension, select Information
  • Find the Open with option – click the title if its hidden
  • Select OS/2 and click Change for all...
  • Finally, a This change will be applied to all files with DDK extension message should pop-up. Click Continue button in order to confirm your choice.

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

Should the problem still occur after following steps 1-3, check if the DDK file is valid. Being unable to access the file can be related to various issues.

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

Should it happed that the DDK 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 DDK file is indeed infected follow the instructions below.

2. Verify that the DDK file’s structure is intact

Did you receive the DDK 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. When downloading the file with DDK extension from the internet an error may occurred resulting in incomplete file. Try downloading the file again.

3. Ensure that you have appropriate access rights

There is a possibility that the file in question can only be accessed by users with sufficient system privileges. Log out of your current account and log in to an account with sufficient access privileges. Then open the IBM OS/2 Saved SKF file.

4. Make sure that the system has sufficient resources to run OS/2

The operating systems may note enough free resources to run the application that support DDK files. Close all running programs and try opening the DDK file.

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 IBM OS/2 Saved SKF file. Outdated drivers or software may have caused the inability to use a peripheral device needed to handle DDK files.

Do you want to help?

If you have additional information about the DDK 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 DDK file.

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