Stellar Phoenix Zip Recovery

DynaZip is an application that compresses a large file into a smaller file, without losing any information. The application is mainly used by Windows developers who work on large files. The .zip file created using DynaZip application can be easily attached to an e-mail and sent through the network. However, like any other file, this .zip file is also prone to corruption due to header damage, operating system malfunction, network failure, and malicious program like virus. The outcome of the .zip file corruption is an error message that results in inaccessibility of the data saved in that file. To access a .zip file after corruption and with no backup available, the user needs to use a commercial Zip File Repair application that can repair the corrupt .Zip file.

To illustrate the above problem, consider a realistic situation where you try to open a .zip file (created by DynaZip 5.0 application), and you encounter the below error message:

“Dynazip unzip error: zip file structure invalid (problem reading zip file).”

After the above error message appears, the .zip file fails to open and the data saved in it becomes inaccessible. The error message appears every time you try to open the file.

Cause:

The above error message appears when the file structure of the .zip file becomes invalid after the file gets corrupted.

Resolution:

To resolve the above error message and to access the data saved in .zip file, you will need to:

• Restore the .zip file from an updated backup.
• In case of absence of .zip file backup, use a third-party Zip File Repair application to repair its structure.

 A Zip repair tool can Repair Zip files in most situations of logical crash. The tool ensures complete repair without making any change in the original .zip file. The tool can be directly installed from the Internet and can be used even by a non-technical person. The repair utility comes with a detailed user manual that makes the repairing process easy to understand and implement.

Stellar Phoenix Zip Recovery is most powerful zip file repair software that repairs every type of corrupt .zip files created with  DynaZip 5.0 application. The read only utility can also Repair Zip files that are built in WinZip 5.0 to 12.1. The repaired zip files can be previewed and saved at required location. The tool supports Windows 7, Vista, 2003, XP, and 2000 operating systems.

A Zip archive is compressed form of the file that is considerably smaller than the original file. Various advantages of using a Zip file are saving storage space, reducing file transmission time, protecting sensitive data and more. A Zip file can be corrupted due to file version mismatch, application incompatibility, malicious software like virus and more. In most of these situations, the Zip archive is unable to extract data that results as an error message. In case of no updated backup existence, you need to repair the affected Zip file by using effective Zip Repair tools.

Consider a practical instance, you Zip your Access database file and store it in your USB flash drive. After saving the database in the USB drive, you delete it from your system. To your surprise, when you attempt to open zipped Access database file from the USB device, you encounter the below error message:

“Extracting to “C:\mypath\”
Use Path: yes Overlay Files: no
Extracting PriceListNew.mdb
Error: invalid compressed data to inflate”

The above error message indicates that Zip file has been corrupted.

Cause:

The root cause for the occurrence of above error message is file version mismatch. This is the reason that deflation (compression algorithm) is unable to extract the data from corrupted Zip file. Another reason for the occurrence of above error message can be WinZip incompatibility. The system on which you are trying to open the Zip file (created with a modern version) has an older WinZip version.

Resolution:

To resolve the above problem and extract Zip file data; you need to install a compatible WinZip version on your system. However, if the above measure falls short to open the Zip file, then you need to go for Zip file repair. To do so, you need to use powerful zip repair application. Such Zip Recovery utilities employ powerful scanning algorithms to comprehensively repair and restore the Zip archives. These recovery utilities provide highly interactive and user-friendly interface that makes them easy-to-understand without prior technical knowledge. These applications easily take care of common Zip corruption issues like CRC (Cyclic Redundancy Check) errors, WinZip corruption, virus infection and more.

Stellar Phoenix Zip Recovery is the most efficient Zip Repair tool. This zip recovery tool repairs corrupted Zip files created with WinZip 5.0 to WinZip 11.1. It can also repair and restore all sub-types of password protected Zip files up to WinZip 8.0. It is compatible with Windows Vista, XP, 2003, 2000, NT and ME.

When you try to extract a Zip file that is downloaded from the Microsoft Windows SharePoint Service Library, you might receive the following error message:

“Cannot open file: it does not appear to be a valid archive. If you downloaded this file, try downloading the file again.”

You might experience this problem if the HTTP (Hyper Text Transfer Protocol) compression has been enabled in Web Site’s properties of Microsoft IIS (Internet Information Service) on SharePoint Virtual Server.

Cause
When a Zip file is downloaded using IIS, IIS may encode that file as GZip (GNU Zip). Thus, the browser clients pass that file directly to unzip program. But the program can not read the file and thus shows you this error message.

You may also encounter this problem due to Zip file corruption. The corruption can take place because of incompatible compression standard. The unzip program can not read the file in this case also and thus you get the error message.

Resolution
To fix this issue, you are required to alter the MIME or Multipurpose Internet Mail Extensions type of your Zip file from ‘Application/x-zip-compressed’ to ‘Application/oclet-stream’. MIME type can be changed from the IIS Manager.

If changing the type of MIME does not help, then the problem is due to Zip file corruption and you need to opt for zip recovery software to resolve it. For easy and automated Zip Recovery, you should go for third party utilities, known as Zip Repair software.

Stellar Phoenix Zip Recovery is the most advanced and commanding tool that ensures complete and safe Zip Repair in most of the corruption scenarios. This Zip Recovery tool can repair zip file up to the size of 800 MB.

This Zip Recovery tool is compatible with password protected Zip files of WinZip 8.0 and earlier versions. It can repair sub-types of Zip files till WinZip 11.1 that do not need password for opening. It supports Windows Vista, XP, 2003, 2000, NT and Me.

If you are a computer user, you must have been told to create proper backup of your precious data. It is the best possible way to protect your data against data loss.

It could be done using backup software. There are two types of backup software available in the market:
. First one which use proprietary file format for storing data. To restore data from these files, you need to have the original application.
. The second type of backup software store backup in Zip compression format. It is the most familiar file format that can be restored using WinZip tool.

The working of these both types of software might be same. The only difference is in the resultant file format.

To restore data from Zip backup file, you need to simply extract it using WinZip utility. After extraction, you can use the data as per your requirements.
It is very useful and easy method of creating backup and then restoring your precious data in case of data loss situations. But sometimes, while extracting Zip file, you might encounter error message and may see the following entries in log:

“11/24/2004 6:41:33> Backup error: Not a valid zip file!
11/24/2004 6:41:33> Backup terminated unexpected: backup_28July_04.dat
11/23/2004 9:52:12 PM> Bytes to backup 6349646338
11/23/2004 9:52:09 PM> Files to backup: 3 Folders info to backup: 0
11/23/2004 9:52:09 PM> Files total: 3
11/23/2004 9:52:06 PM> Backup started: backup_28July_04.dat”

. The date, size, number of files, and time could be different for every error message.

This error message may take place due to corruption to the Zip file. To extract data from this file, you need to perform zip repair. Zip Repair is the job of Zip Recovery Software and can be performed by going through few simple steps.

Stellar Phoenix Zip Recovery software is the most popular and highly advanced Zip Repair Software that is capable of solving each and every Zip corruption problem. It can Recover Zip File up to the size of 800 MB. It is a read only and non destructive zip recovery Software that performs original Zip Repair.

When you attempt to extract a Zip file, the operation may fail and you might encounter the following error message:

“Windows has blocked the file c:\program\file from being extracted.
Would you like to continue trying to extract files, skip all further blocked
file notifications, or cancel the extract operation?”

With this error message, the extraction process gets terminated and thus you can not access your data from Zip file.

Reasons of this issue

This error message generally occurs in two situations:
. The Zip file, which you are trying to extract, has virus infected files. Thus, due to security reasons, Windows does not allow this file to get extracted.
. The file has got damaged and WinZip can not extract it.
In both of these situations, you may experience data loss. To avoid the effects of data loss, we need to sort out this problem as quickly as possible by recovering our files.

Resolution

As per the cause of such behavior, there are two possible solutions. These are:
. If the problem is due to virus infection we need to scan it using an antivirus or antivirus tool and should try to disinfect the file without losing data
. If you encounter this error message due to corruption of the Zip file, you need to perform zip repair using third party Zip recovery software.

The Zip repair software are specially designed tools, which systematically scan your corrupted Zip file and extract all the data from it. These software are very easy to use and largely automated.

Complete and safe Zip recovery needs powerful zip repair software like Stellar Phoenix Zip Recovery. Phoenix Zip repair is read only operation, which performs original Zip recovery in all major scenarios of corruption.

With self descriptive user interface and rich graphical support it does not require any sound technical knowledge to carry out zip recovery. This Zip repair software supports all versions of WinZip and can recover any size of Zip file.

The Zip file header is the portion of the file which retains all the information about the file like the creation date, last modification date, file size, file type and so on. The corruption of this information can make whole of the file corrupt. So if you get ‘Header Corrupt’ like messages while attempting to extract the Zip archive, this is certainly due the header corruption.

Sometimes these types of error messages can also arise due to the corruption in self-extractors along with zip files, if the occurrence of this error message is frequent. If the file has been downloaded, then the errors due to the network problems can make the file corrupt. So downloading the file again will cure this issue.

But if you get stuck again with this error message, then probably this is due to the virus infection which can make other zip files also corrupt. Viruses like CIH, which make their target to the executable files like that of self-extracting Zip files using WinZip self-extractor, can make the file corrupt and may be indicated through these kinds of error messages.

The virus can infect the self-extractor through the unsafe download or by taking a journey to your system from any storage media. So don’t trust any unreliable source as this could be the home of CIH like viruses. An efficient virus scanner is thus recommended to be installed so as to avoid such situations.

And for curing the already corrupted Zip files, you can try out the available zip repair solutions. As the addressable tool to all the corruption issues, the Zip recovery tools do a scan of the corrupted file to make it usable. These tools are specifically called Zip recovery software.
Providing the perfect Zip repair and restore, these software offer the interactivity through their user interface. These Zip recovery applications come for the different versions of Zip with the different set of repairing standards.

Zip repair through Stellar Phoenix zip recovery software is considered as the safest and worth way to go. This Zip recovery utility makes a perfect work whilst availing the interactive user interface and is valuable for all the file versions of Zip.

This Zip recovery software does the safe job due to its read-only and non-destructive nature. This also repairs and restores the password protected files and is applicable to all the corruption issues.