1925897 - Excel cannot open the file '*.xlsx' because the file format or file extension is not valid

You are facing following error when "double click" to open file downloaded from SAP with Excel version 2007 or above.
Excel cannot open the file '*.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.

Excel shows an empty screen after you click Button "OK".

SAP BASIS release independent

Excel cannot open the file, file format or file extension is not valid, The file you are trying to open, different format than specified by the file extension, list, local file, spreadsheet, xls, xlsx, office 2003, 2007, 2010, GUI_UPLOAD, GUI_DOWNLOAD. , KBA , BC-FES-GUI , SAP GUI for Windows , BC-ABA-LI , ABAP List Processing , Problem