FIWTIN_QRETURNS - File not generated in excel format

Hi,

When I execute 'FIWTIN_QRETURNS - Quarterly TDS Returns', I select the File Options with 'Create Excel File' but the file generated is not in excel format. 3 files are generated as expected but the type of file is not excel. The type is 'File' and cannot be opened in excel

Is there any setting that needs to be done?

BR

Abhi