I am getting HRESULT: 0x800A03EC on Worksheet.range method. Number of rows are more than 70K. Office 2007.
Code:
Microsoft.Office.Interop.Excel.Range
I also faced the same issue, when I was developing a application which exports project contents into excel file.
I could not found the resolution in forums for my problem, then I check the maximum capacity of excel and found below link which says
"Worksheet size 1,048,576 rows by 16,384 columns" and this was the issue in my case, I was exporting more than that rows. Refer below link for details
http://answers.microsoft.com/en-us/office/forum/office_2013_release-excel/with-excel-2013how-many-rows-will-this-contain/271264fb-3ab8-4c5b-aa0d-7095c5ac6108
Regards Prashant Neve