CDU File Extension

What is CDU file?

Full format name of files that use CDU extension is CDU Paint Image Format. Files with CDU extension may be used by programs distributed for Windows platform. CDU file belongs to the Graphic Files category just like 524 other filename extensions listed in our database. XnView is by far the most used program for working with CDU files. XnView software was developed by Pierre-Emmanuel Gougelet, and on its official website you may find more information about CDU files or the XnView software program.

Programs which support CDU file extension

The following listing features CDU-compatible programs. CDU 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 CDU extension?

Being unable to open files with CDU extension can be have various origins. What is important, all common issues related to files with CDU 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. Download and install XnView

Problems with opening and working with CDU files are most probably having to do with no proper software compatible with CDU files being present on your machine. The solution is straightforward, just download and install XnView. On the top of the page a list that contains all programs grouped based on operating systems supported can be found. One of the most risk-free method of downloading software is using links provided by official distributors. Visit XnView website and download the installer.

Step 2. Update XnView to the latest version

If you already have XnView installed on your systems and CDU files are still not opened properly, check if you have the latest version of the software. Sometimes software developers introduce new formats in place of that already supports along with newer versions of their applications. This can be one of the causes why CDU files are not compatible with XnView. All of the file formats that were handled just fine by the previous versions of given program should be also possible to open using XnView.

Step 3. Associate CDU Paint Image Format files with XnView

If the issue has not been solved in the previous step, you should associate CDU files with latest version of XnView you have installed on your device. The method is quite simple and varies little across operating systems.

The procedure to change the default program in Windows

• Right-click the CDU file and choose Open with option
• Next, select the Choose another app option and then using More apps open the list of available applications
• Finally select Look for another app on this PC, point to the folder where XnView is installed, check the Always use this app to open CDU 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 CDU extension, select Information
• Proceed to the Open with section. If its closed, click the title to access available options
• 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 CDU extension. By clicking Continue you confirm your selection.

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

If you followed the instructions form the previous steps yet the issue is still not solved, you should verify the CDU file in question. It is probable that the file is corrupted and thus cannot be accessed.

1. Check the CDU file for viruses or malware

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

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

If you obtained the problematic CDU 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. It could happen the the download process of file with CDU extension was interrupted and the file data is defective. Download the file again from the same source.

3. Ensure that you have appropriate access rights

Sometimes in order to access files user need to have administrative privileges. Log in using an administrative account and see If this solves the problem.

4. Check whether your system can handle XnView

If the systems has insufficient resources to open CDU 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 CDU Paint Image Format files. Outdated drivers or software may have caused the inability to use a peripheral device needed to handle CDU files.

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