excel found unreadable content in (Xlsx)

4 posts, 0 answers
  1. Kurt Kluth
    Kurt Kluth avatar
    144 posts
    Member since:
    Oct 2009

    Posted 20 Nov 2014 Link to this post

    We have the latest version of Telerik ASP.net tools that allows the exporting to Xlsx from a RadGrid. 

    We are receiving the following error when we go to export the data:

    excel found unreadable content in <filename>.xlsx, do you want to recover the contents of the workbook?

    I would like to mention that it doesn't give it to us all the time, only on select downloads and I am unable to determine what it had to repair. 

    Any suggestions?
  2. Maria Ilieva
    Maria Ilieva avatar
    4017 posts

    Posted 25 Nov 2014 Link to this post

    Hi Kurt,

    The presented error actually is a security issue.
    You can revise the thread below for more information on this matter and possible solution for its fixing:

    Maria Ilieva

    Check out the Telerik Platform - the only platform that combines a rich set of UI tools with powerful cloud services to develop web, hybrid and native mobile apps.

  3. UI for ASP.NET Ajax is Ready for VS 2017
  4. Alva
    Alva avatar
    1 posts
    Member since:
    Jul 2016

    Posted 19 Jul Link to this post

    1. Navigate to the folder containing the XLSX file you want to repair.
    2. Right-click the file and select "Copy" and then right-click on a
    blank space within the folder and select "Paste." This action generates a
    backup copy of the corrupted file.
    3. Open Microsoft Excel 2007 or later.
    4. Click the "Office" button in the top left corner of the window and select "Open."
    5. Navigate to the folder containing the copy of the XLSX file you
    generated previously and select it by single-clicking its icon.
    6. Click the arrow located to the right of the "Open" button and select "Open and Repair."
    7. Select "Repair." If you previously attempted this method and the
    process failed, try to extract only the values and formulas by selecting
    "Extract Data" instead. Regardless of the method you choose, your data
    will appear on the screen within a few seconds if the process completes

    For more visit: http://www.repairmsexcel.com/blog/how-to-resolve-excel-found-unreadable-content-in-filename-xls-error-in-ms-excel

  5. Maria Ilieva
    Maria Ilieva avatar
    4017 posts

    Posted 21 Jul Link to this post

    Hello Alva,

    Thank you for the provided information.

    I'm sure it will be of a big help for other users that are facing the problem discussed ion this thread.

    Maria Ilieva
    Telerik by Progress
    Do you need help with upgrading your ASP.NET AJAX, WPF or WinForms projects? Check the Telerik API Analyzer and share your thoughts.
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