Error 'Exception from HRESULT: 0x800A03EC' when saving an excel file in C#-ASP.NET 2

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Error 'Exception from HRESULT: 0x800A03EC' when saving an excel file in C#-ASP.NET 2

Posted 16-Sep-11 7:11am

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Updated 16-Sep-11 20:42pm

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**Orcun Iyigun** · Answer 1 · 2011-09-16T10:41:00

First of all check if the application have permissions to write to the folder?
If you have permissions, check this link;

http://www.made4dotnet.com/Default.aspx?tabid=141&aid=15[^]
If that didnt solve maybe you are trying to save more than 256 columns of data. XLS files only support 256 columns of data.You may want to;

Change the data matrix such that it had fewer than 256 columns of data,
or
write to XLSX file. The new XLSX file format supports many more columns of data

Good luck

fjdiewornncalwe · Answer 2 · 2011-09-16T08:59:00

Does this Thread help you? According to it, one user solved it and this was his comment:

I've also experienced the same problem after moving my site from Server 2003 to 2008. It's a curious fact that "SaveCopyAs" method works fine. The only problem with it is that it takes only one parameter - the filename. You supply Type.Missing for almost all other params, so it'll probably do for you.

Error 'Exception from HRESULT: 0x800A03EC' when saving an excel file in C#-ASP.NET 2

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