Tips to open KAB file

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

KAB file extension

File Name KMail Address Book Format
File Category Misc Files

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

Operating systems
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What is KAB file?

The file with the extension KAB is the Misc Files file type. Misc Files consists of 6033 similar files. KMail Address Book Format is supported by 1 operating systems. Although it can be found with greater or lesser success on any operating system, it will only be useful on Linux. The KMail - Mail Client application is recommended to open the file. It was released by KDE e.V.

How to open KAB file?

The main problem with KMail Address Book Format is that the KAB file is incorrectly associated with programs. Thus, when you open KAB, the program selection wizard or some other program starts. This problem can be easily remedied.

The first thing you should do is just "doubleclick" on the KAB 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 KMail - Mail Client

In this case, you should first verify that the KMail - Mail Client application is installed on the computer. The easiest method is to use the system search engine by entering the program name KMail - Mail Client in it. 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 KAB files.

Programs to open KAB file

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

Step 2. Create association of KMail - Mail Client with KAB files

If the application is or has been freshly installed, but the KAB file still does not use the KMail - Mail Client program, it means no association. The association can be created using the drop-down list available by right-clicking on the file and selecting Properties. Information about the file and the program that the file is associated with are available here. Using the "Change" button we can select the desired program. If there is no software on the list, simply select "Browse" and manually select the directory where the application is installed. Checking the "Always use the selected program ..." box will permanently associate the KAB file with the KMail - Mail Client program.

Step 3. Update KMail - Mail Client to the latest version

If, despite the association of the KMail - Mail Client program with the KMail Address Book Format file, the file still does not open, check the program version and possibly update it to the newest version. This can be done using the application (if it provides such options) or from the KDE e.V website and install the latest version.

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

The problem may also be with the file itself if the above steps don't work. File problems can be divided into the following:

The affected file may be 0 KB or smaller than expected. This suggests truncating the KAB file contents when downloading or copying. Downloading the file again should fix the problem.
The computer may have fallen victim to a computer virus or hacker. A virus scan using an up-to-date antivirus program should fix the problem. Some antivirus vendors also provide free online scanners. However, it is important to scan the entire system, not only the file KAB or the program directory. As a result of the scan, sometimes it is not possible to recover KAB files, which are deleted if there is a backup of this file, then after restoring it, it must also be scanned.
Older version of KAB file may not always be supported by the latest software version. 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. Some programs offer the option of recovering data from damaged KAB files. The easiest way is to restore the file from a backup, if there is one, or contact
The program indicates that the file is encrypted or corrupted. The encrypted KAB files can be used by the device on which they were encrypted, on any other device it is required to have the appropriate cryptographic key and decrypt the file before its recovery.
The operating system protects files in some locations (e.g. the root of the system partition) against unauthorized access. The problem is only writing to the file, not reading it. If possible, you can try to move the KAB file to another location.
This problem only occurs with more complex files. Some file types can only be opened in one program at a time. Closing other programs should help. 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.