unable to open xls (SpreadsheetML, XML Spreadsheet 2003, or XMLSS)

[rtravel]

I have does the installation of LibreOffice Version: 5.4.4.2 (x64) Build ID: 2524958677847fb3bb44820e40380acbe820f960 on my organization and they can open all documents except one, a .xls file (SpreadsheetML, XML Spreadsheet 2003, or XMLSS) with the these headers:

<?xml version="1.0" encoding="ISO-8859-1"?>

    <?mso-application progid="Excel.Sheet"?>
    <Workbook xmlns="urn:schemas-microsoft-com:office:Spreadsheet"
       xmlns:o="urn:schemas-microsoft-com:office:office"
       xmlns:x="urn:schemas-microsoft-com:office:excel"
       xmlns:ss="urn:schemas-microsoft-com:office:Spreadsheet"
       xmlns:html="http://www.w3.org/TR/REC-html40">
        <DocumentProperties xmlns="urn:schemas-microsoft-com:office:office"> 

I had googling that for more than two days and i can´t find a solution for that, that it´s a very important file for the organization. Any idea about the solution?

Thanks in advance.

[erAck]

Submitted as bug tdf#115246