License & RegistrationBandizip License Policy
How to register Bandizip
Bandizip Edition Comparison
Bandizip MSE (Microsoft Store Edition)
How to receive a receipt
How to unregister Bandizip
Exclusive features of Bandizip Paid EditionHow to use the Password Manager
How to use Repair Archive
How to use the Password Recovery
How to preview images in an archive with Bandizip
How to use Antimalware Scan on Archive
Features & Technical TermsHow to use Extract Here (Smart)
How to split a large file into smaller files with Bandizip
How to use Unicode filenames in ZIP format
ZIPX archive format
7z archive format
ZPAQ archive format
How to open RAR files
How to open ALZ and EGG files
How to use Fast Drag and Drop
How to use Multi-core Compression
How to use High-speed Archiving
How to modify an archive without decompression
How to open a file in an archive without extraction
How to edit a file and save it in an archive directly
How to set a password for an archive
How to encrypt filenames in archives
How to move files to Recycle Bin (Trash) when deleting
How to compress a file even when the file is used by another process
How to use Parallel Extraction
Expand folder tree automatically
How to prevent data corruption by safe backup
How to test an archive
How to copy Zone.Identifier information for malware protection
How to change the theme color for Bandizip
How to export and import Bandizip settings
How to uninstall Bandizip
Command Line Parameters
Bandizip Setup Command Line Parameters
Bandizip on Windows 10 on ARM
TroubleshootingHow to troubleshoot when I can’t register Bandizip
How to troubleshoot when I can’t access the email account that I used to buy Bandizip
How to troubleshoot when codepage auto-detection doesn’t work correctly
How to troubleshoot when Bandizip opens archive files automatically when I download them on the browser
How to troubleshoot when an icon for archives doesn’t appear properly in the File Explorer
How to troubleshoot when a right-click menu (context menu) for Bandizip doesn’t appear
How to troubleshoot when a right-click menu (context menu) for Bandizip isn’t displayed properly
How to troubleshoot when the compression or decompression speed is too slow
How to troubleshoot when Error 22 occurs and Mac Finder on Catalina can’t extract a ZIP archive
How to troubleshoot when Mac Finder can’t extract an encrypted ZIP file
How to use a non-alphabetic language character in a password
How to test multiple archives
How to troubleshoot “The parameter is incorrect.”
How to troubleshoot when Bandizip conflicts with Sticky Notes
How to troubleshoot when I can’t open an archive in a network mapped drive
How to troubleshoot when a split archive can’t be decompressed
How to troubleshoot when bdzsfx.x86.sfx is diagnosed as malware
How to run Bandizip on Linux using Wine
How to prevent data corruption by safe backup
One of the questions frequently asked in Bandizip forum is as follows: “I compressed my important files and deleted the original ones, but it says the archived files are corrupted. What should I do?”
Data corruption refers to an error in computer data that occurs while the computer read, write, process, store, or transfer data; it causes unintended changes to the original data.
If the data is corrupted, you may see an error message after archiving/extracting as below.
Once this happens, however, the archived file itself is already corrupted and the data is often unrecoverable. Therefore, it is most important to prevent data corruption in advance.
There are many causes of data corruption in an archived file:
The file was corrupted by the archiver’s bug during the compression.
Any software may have a bug. Because some bugs occur only under particular conditions, while the archiver seems to have no problem at other times, one day suddenly it may cause serious problems at the moment that you compress an important file of yours.
The file was corrupted by an error during data transmission over the Internet.
An error rarely occurs while the file is transferred over the Internet. In some cases, however, if the network is unstable and multiple transmission errors occur simultaneously, the file transfer protocol fails to detect them and the file is sent corrupted.
The file was stored on a cloud server and corrupted.
Some cloud services use low-cost server equipment and the file stored on it is often more easily corrupted compared to ordinary cases.
The disk or USB drive where the file was stored was damaged.
Although HDDs and SSDs are relatively reliable storage devices, it is frequent that data is corrupted due to mechanical failure (regardless of the user’s mistake). And USB drive, in particular, is a storage device on which data corruption occurs very frequently.
For these reasons, it is possible that even a flawless file may become corrupted all of a sudden. And if the corrupted file is an archive file, due to its characteristic, minor data corruption leads to unrecoverable failure of the whole file.
How to prevent data corruption and backup important files
Backup multiple copies of the files.
Don’t delete the original ones. If you need to delete them, make and keep at least two backup copies of them.
Store the backups on different devices.
If you keep all of the backups on a single storage device, you may lose them at the same time when the device is damaged. Keep them separate using different devices.
Use “Archive Test” feature.
ZIP and other archive formats store checksum information called CRC internally and use it to determine whether an archive file is corrupted or not. Use “Archive Test” feature to check your archives for data corruption.
For more information about the Archive Test, visit the links below.