ZIP is an open source file format that is used by everyone to compresses files into smaller ones, which take up less space on your computer. Many people use these files to store their archive files with a smaller file size in order to clear up storage space. However, the open source format of the ZIP files often creates a few troubles, resulting in broken or damaged files.
The usage structure of ZIP is clearly defined in the ZIP Application Note. According to this definition, the information in the headers of two ZIP files should be equivalent in order to make them function properly. In simple words, there are two files that are saved separately in the Local Directory and the Central Directory; and the information related to these files in both locations should be similar and accurate for them to open.
Most commonly, an inaccuracy in the header is the key to many issues that cause damaged ZIP files. This issue is mainly caused while the file is being created or it might be the result of some issue in the application source. While it is not a deliberate mistake on your part, it will be treated as a possible security threat by the WinZip software. WinZip reports all such inaccuracies and inconsistencies in the file extensions as risks, labeling the file as corrupt.
In many cases, there are ways to recover broken ZIP files. In case the files were important, giving repair a try is worth the effort. A ZIP file fix routine guide can be found online to help you with the process. If you have lost a lot of data, you should consider contacting a data recovery professional. However, the best thing you can do is make use of one of the many ZIP repair software solutions to recover these files.
However, in some cases, recovering damaged ZIP files is not possible. In some cases, the damage caused cannot be fixed and the files are lost forever. In such cases, the best option you can use is to get the files if you have stored them at an alternative location. If you have all your data backed up, you can get the file from there. On the other hand, if the file was downloaded, the problem can be solved by downloading it again. Therefore, it is advisable that when you make ZIP folders of your file, you should keep a backup of all files.
So, if you are currently dealing with some broken ZIP files, you can try getting it fixed on your own using a software system. While you can get professional services, they are quite expensive and not ideal to do for a few files.
About the Author
Alan Chen is President and Chairman of DataNumen, Inc., which is the world leader in data recovery technologies, including word recovery, excel repair, outlook repair and sql recovery software products. For more information visit www.datanumen.com.