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Thread: Winzip Extraction Error Message WZ40

  1. #1

    Winzip Extraction Error Message WZ40

    Message WZ40
    Trying to download four zipped files from our SharePoint server.They download as if all is well, but when I run winzip (11) to unzip the ZIP file format, It tells me that something is wrong with them...
    " this does not appear to be a valid archive message WZ40"

    I tried compressing and uploading the same four file set on my PC. Prior to upload to SharePoint the files unzipped normally. After downloading my test file I received the same error messge. Does something happen to the compressed files during upload or download,


    Thanks,


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  2. #2
    Junior Member odonovan's Avatar
    Join Date
    Sep 2015
    Posts
    1

    Re: Winzip Extraction Error Message WZ40

    Try repairing the Zip archive by following these steps or read and learn topics below, last one resources is dedicated for severe corruptions of .zip archives

    https://www.repairtoolbox.com/ziprepair.html Zip Repair Toolbox

    Click Start -> Click All Programs-> Click Accessories
    Right click on the Command Prompt and Run as Administrator ( Left click Command Prompt for Windows XP)
    Change directories to the file folder of the damaged Zip file is located
    Type: "C:Program FilesWinZipwzzip" -yf zipfile.zip
    If the damaged file is spanned or split, use the following command:
    "C:Program FilesWinZipwzzip" -yfs zipfile.zip

    NOTE: This might not be a fool proof solution and you might loose the valuable data. Create a backup file before you carry out above mentioned steps.

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