In testing CA Output Management Web Viewer 12.1 with Windows 10, I have come across an issue when sending a report to a Excel Spreadsheet. When the report is opened it doesn't look like a report.
Microsoft Windows 10
Microsoft Excel
By default Microsoft Windows 10 opens an app to read the Excel file (which is an .xml file).
To resolve the problem with export you must Associate a file type with an .xml file: