KZ File Extension

What is KZ file?

In files with the .KZ extension, data of various types are stored, which have been subjected to compression in KuaiZip software. The format is proprietary, used only by this program. KuaiZip is a Chinese freeware program for compressing and decompressing files. It allows for an increase in the efficiency of data packing by 5 to 30% compared to the RAR standard and about 10% compared to 7z. The latest version of the program was released in 2011 and is no longer being developed.

Usage of KZ format files

KZ files, regardless of type, are opened in the latest available version of the software. The creator provides backward compatibility for the format. To unpack a file, it is necessary to install the KuaiZip application on a computer, available for Windows operating systems. The archives support:

• multi-volume compression,
• solid-type compression,
• locking, testing compressed archives,
• the ability to create a self-extracting archive,
• adding and viewing comments to the archive.

KZ files may be encrypted, password protected, but its recovery in case of loss is not possible.

Opening and changing the format of KZ files

After unpacking a KZ archive in KuaiZip, one can access the files contained within it. The software also allows for recompression or archiving into one of the selected, common formats such as ZIP, 7Z, ACE, ARJ, BZ2, CAB, GZ, ISO, JAR, LZH, or TAR. KuaiZip also enables the mounting of archives or disk images or virtual disks.

Programs which support KZ file extension

Programs that can handle KZ files are as follows. Files with KZ suffix can be copied to any mobile device or system platform, but it may not be possible to open them properly on target system.

Updated: 04/22/2024

How to open file with KZ extension?

Being unable to open files with KZ extension can be have various origins. Fortunately, most common problems with KZ files can be solved without in-depth IT knowledge, and most importantly, in a matter of minutes. We have prepared a listing of which will help you resolve your problems with KZ files.

Step 1. Install KuiaiZip software

The most common reason for such problems is the lack of proper applications that supports KZ files installed on the system. The solution is straightforward, just download and install KuiaiZip. Above you will find a complete listing of programs that support KZ files, classified according to system platforms for which they are available. If you want to download KuiaiZip installer in the most secured manner, we suggest you visit KuaiZip.com website and download from their official repositories.

Step 2. Verify the you have the latest version of KuiaiZip

If the problems with opening KZ files still occur even after installing KuiaiZip, it is possible that you have an outdated version of the software. Check the developer’s website whether a newer version of KuiaiZip is available. 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 KZ files are not compatible with KuiaiZip. The most recent version of KuiaiZip is backward compatible and can handle file formats supported by older versions of the software.

Step 3. Assign KuiaiZip to KZ files

If you have the latest version of KuiaiZip installed and the problem persists, select it as the default program to be used to manage KZ on your device. The method is quite simple and varies little across operating systems.

The procedure to change the default program in Windows

• Clicking the KZ with right mouse button will bring a menu from which you should select the Open with option
• Click Choose another app and then select More apps option
• To finalize the process, select Look for another app on this PC entry and using the file explorer select the KuiaiZip installation folder. Confirm by checking Always use this app to open KZ files box and clicking OK button.

The procedure to change the default program in Mac OS

• By clicking right mouse button on the selected KZ file open the file menu and choose Information
• Proceed to the Open with section. If its closed, click the title to access available options
• Select KuiaiZip and click Change for all...
• If you followed the previous steps a message should appear: This change will be applied to all files with KZ extension. Next, click the Continue button to finalize the process.

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

Should the problem still occur after following steps 1-3, check if the KZ file is valid. Problems with opening the file may arise due to various reasons.

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

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

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

Did you receive the KZ 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. It could happen the the download process of file with KZ extension was interrupted and the file data is defective. Download the file again from the same source.

3. Verify whether your account has administrative rights

Some files require elevated access rights to open them. Log out of your current account and log in to an account with sufficient access privileges. Then open the KuaiZip Compressed Format file.

4. Make sure that the system has sufficient resources to run KuiaiZip

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

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 KuaiZip Compressed Format files. It may be the case that the KZ files work properly with updated software that addresses some system bugs.

Do you want to help?

If you have additional information about the KZ 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 KZ file.