• Go to spreadsheet => export to Microsoft Excel 
  
  
  
  
• Choose the right directory to save the file as follows : 
            => If you do not choose the right directory, you risk to save into the server that you will not have access 
   
  
  
• Choose well the extension xlsx for excel: 
  
  
  
  
• Choose All Pages & Check Export all header labels 

The file is exported !