Resolving 'the Compressed (zipped) Folder Is Invalid Error...' While Opening A Zip File In Outlook W

WinZip is an extensively used application to compress large files

. At times, when you receive a zip file via e-mail in your Microsoft Outlook Web Access client, you might not be able to open it. You may be restricted by an error, stating the file is either corrupt or invalid. Prominent reasons behind zip file corruption could be abrupt system shutdown, virus infection or more. In such scenarios, you can access the information stored in zip files by either downloading them again or by repairing the damaged zip files. You can repair damaged zip files and extract data from them on your own by using appropriate tools. In order to achieve 100 per cent successful results, you should download a third-party zip repair application.

Consider a scenario, wherein, you use the Microsoft Outlook Web Access client to open a compressed .zip file attachment which you downloaded from MS Exchange Server 2003 computer, and receive the following error message:

The Compressed (zipped) Folder is invalid or corrupted.

As a result of the above error, you are unable to retrieve valuable data from a zip file.

Cause

The above error can be witnessed in the following conditions:

If your Outlook Web Access front-end server has forms-based authentication enabled

Or if Gzip data compression is enabled for Outlook Web Access

(The Gzip filter compresses and may corrupt the attachment when the Outlook Web Access client downloads the e-mail from Exchange Server)

Resolution

To resolve this issue, you must consider the following zip recovery steps:

Obtain the latest service pack for Exchange Server 2003

Repair the corrupt zip file using a professional zip repair application

These advanced tools repair corrupt zip files, irrespective of the reason behind corruption, and recovers data by applying sophisticated algorithms. Being equipped with simple and graphical user interface, these applications can be efficiently used by users who do not possess technical aptitude.

You can download a repair application for zip files from the Internet. But, do remember to download a read-only utility which doesn't alter or damage the original content stored in zip files.

by: suzismith

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