When SQL Image Viewer first supported exporting your result sets to Excel spreadsheets, it only supported the older .xls format.
Since version 9.7 (released in December 2019), the newer Excel format (.xlsx) is now supported. However, because SQL Image Viewer uses your last export settings when you choose the Excel file name, you may still be using the older .xls format.
To export your data and images to the new Excel format, simply change the file extension from xls to xlsx.
For new users, and users who have never exported to Excel previously, the default extension used is xlsx, so no action is required on your part to use the new Excel format.
The main advantage in using the xlsx format is that the maximum number of rows in your worksheet increases to 1,048,576 from 65,536 rows.