Hello,
I have an issue with HTML5 Report Viewer 13.0.19 when exporting Excel.
It seems that if the size of the resulting excel is big aprox 15MB you get an error when open it saying there is a problem with the content of the .xls file, if you try the report with partial data then the resulting excel of those partial reports are ok,
Is there any known issue with this?
Regards.
We are not aware of such an issue and unfortunately, the error message is too general for me to be able to diagnose what is causing this issue. Is the problem present when exporting to the newer XLSX file format?
I found a thread on Microsoft forums that seems similar to your case and might help you - Excel File Too Large - Unable to Open.
If you would need further assistance, It would be helpful if you could send us a report with some sample data that we could use to test this scenario locally.