I am generating reports in quality center 9.2. When I try to save the report by default it is saving in .xls format. I tried to save forcfully in .xlsx format. And when I try to open the report saved in .xlsx format it is giving me an error and I am not able to view the report. Please let me know is there any workaround available so that I can save the report in .xlsx format because I have huge amount of data.