Tips to open CUJ file

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

CUJ file extension

File Name Personal Backup Data Format
File Category Misc Files

The CUJ file is supported on 1 operating systems. Depending on your operating system, you may need different software to handle the CUJ files. Below is a summary of the number of programs that support and open the CUJ file on each system platform.

Operating systems
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What is CUJ file?

The file with the extension CUJ is the Misc Files file type. Misc Files consists of 6033 similar files. Personal Backup Data Format is supported by 1 operating systems. These systems consist of Windows, although it may occasionally be found on another system, it will be non-functional. The main program that supports this format is Personal Backup. This was created by J. Rathlev, IEAP, Kiel University.

How to open CUJ file?

The most common problem when using Personal Backup Data Format is that a specific CUJ is not associated with the program. This causes the file CUJ to open by system applications not designed for this purpose, or to display a message that there is no associated program. How to solve such a problem?

The first thing you should do is just "doubleclick" on the CUJ 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 Personal Backup

An often overlooked issue is to make sure that Personal Backup is installed on the computer. To do this, enter the name Personal Backup into the system search engine. In the absence of an appropriate program, its installation in the vast majority of cases will fix the problem. Later in this article you will find a list of programs that can open CUJ files.

Programs to open CUJ file

Remember to download programs supporting CUJ files only from verified and safe sources. We suggest using the websites of software developers.

Step 2. Create association of Personal Backup with CUJ files

If, despite the installed application, the CUJ file does not start in the Personal Backup application, you must create a file association. It is most convenient to call the context menu with the right mouse button and select Properties. The displayed window will contain information about the program that supports this type of file. Using the "Change" button we can select the desired program. The program should be visible in the window, otherwise it should be selected manually using the "Browse" button and the program installation directory should be indicated. The "always use the selected program ..." field will set the Personal Backup application as the default for handling the CUJ file.

Step 3. Update Personal Backup to the latest version

If, however, after binding Personal Backup with Personal Backup Data Format there were still problems, you should update the program to the latest version. In this case, use the J. Rathlev, IEAP, Kiel University website or update the program from the application.

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

If the above steps do not help, you can assume that the file itself is not correct. This could be due to the file itself, the cleanest issues are:

The CUJ file may be unusually small compared to the original file. Usually this applies to CUJ 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 operating system may be infected with a computer virus. A quick virus scan using an up-to-date antivirus program should clear up any doubts. Alternatively, you can use the scanners available online. For the best results, we will scan the entire operating system, not just our CUJ file. Sometimes virus-infected CUJ files cannot be recovered, so make a backup in advance.
Older version of CUJ file may not always be supported by the latest software version. Help should be sought from the software developer, as they usually recommend using free file converters or installing an older version of the program.
There can be many reasons for this. Repairing is very dependent on the file type. Sometimes the program itself has options to repair the most popular CUJ file corruption. The easiest way is to restore the file from a backup, if there is one, or contact
The program can also signal the fact of encryption. The encrypted file CUJ except for the special designation, works normally, but only on the device where it was encrypted, before transferring it to another machine, decryption is required.
Some of the system directories are excluded from modification. While there is usually no problem reading such a file, it may not be possible to save it. Copying the CUJ file to another location will fix the problem.
This problem only occurs with more complex files. You may find that another program you are using is preventing you from working with the file. Running programs (including those in the background) should be verified. If the error persists after closing other programs, wait for a while. Antivirus programs or a backup being made may lock the file for a while without the user's knowledge. If this does not work either, restart the device.