HRESULT: 0x800A03EC on Worksheet.range

Question

I am getting HRESULT: 0x800A03EC on Worksheet.range method. Number of rows are more than 70K. Office 2007.

Code:

Microsoft.Office.Interop.Excel.Range         


        

Answer 1

This isn't directly answering the question, but I was getting this error when opening an xlsx file. The problem was that I was using forward slashes in my file path. See also https://stackoverflow.com/a/24635904/5932003. It used to work in previous versions of Excel, but not with Version 1711 (Build 8730.2127).

I was able to diagnose the problem using IDispatch->Invoke(..., EXCEPINFO, ...). The EXCEPINFO object contained a useful description of what went wrong. I was in C++ land, but I suspect that C# code similar to this SO post will do the trick: Packaging IDispatch Invoke with Parameters in C# (with DISPPARAMS).