2755620 - Excel (xlsx) documents exported from Web Intelligence get corrupted

• Opening an Excel XLSX document exported from Web Intelligence HTML viewer returns the error: "We found a problem with some content in '<DOCUMENT_NAME>.xlsx'. Do you want us to try to recover as much as we can? If you trust the source of this workbook, click Yes"
  
  
• Clicking on Yes returns another error: "Excel cannot open the file '<DOCUMENT_NAME>.xlsx' because the file format or file extension is not valid. Verify that the file has not been corrupted and that the file extension matches the format of the file".
  
  
• Trying to decompress the XLSX file returns an error "Unexpected end of archive" (WinRar) or  The Compressed (zipped) Folder '<File Name>' is invalid (Windows Explorer).

• SAP BusinessObjects Business Intelligence Platform  4.2.x 
• Apache HTTP Server 2.4

Corrupted XLSX, Web Intelligence, WebI , Export , KBA , BI-RA-WBI , Web Intelligence , BI-BIP-DEP , Webapp Deployment, Networking, Vulnerabilities, Webservices , Problem