Hi Pankaj Kumar,
Thanks for using Syncfusion products.
We are not able to reproduce the issue "Unable to parse the Excel file which is deployed on ISS server". We have attached the runnable sample which we tried at our side and also attached the video reference below.
Sample link:
http://www.syncfusion.com/downloads/Support/DirectTrac/86583/OpenExcel_XlsIO1503456966.zipVideo Reference:
http://www.syncfusion.com/downloads/Support/DirectTrac/86583/XlsIOSample1302617382.zipif you still face the issue, could you please update us the issue reproducing sample, which would helps us to analysis more on this issue.
Please let us know if you need clarifications.
Thanks,
Manikandan.M