Please check "Maximum Row Count" value in "Report Attributes". Also please note that, if you apply some filter and try to "Download", then only rows which satisfy filter condition will be downloaded.
Thanks for your Response.
The Maximum Row count is set to 100K and there are no filters applied.
The Rowcount shows 70K after the report is displayed in the page, but when i download i get only less records.
This happens only when the output rows are high, for lesser rows it works good.
An earlier version of microsoft Excel could have a row limit of . So try to confirm if it is not your Excel that causes the problems...
Having the latest version of Excel and also getting only 12k records
When you select "Display All" rows in IR, then are you getting all rows in browser?
I remember there is a restriction of size per each row, that it should not cross 32K per row. Check if any of your row is crossing this limit.