How to download internal table data to .xlsx file ?

Hello All,

I am using SAP ECC 6.0. I need to download internal table data to .xlsx file.

I tried GUI_DOWNLOAD, all the data are getting transferred to the .xlsx file, but while opening I am getting the below error.

Excel cannot open the file "download.xlsx" because 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.

Though Microsoft office 2007 is installed in my system.

Please help <removed by moderator>.

Edited by: Thomas Zloch on Oct 24, 2011 10:55 AM