Exception from HRESULT: 0x800A03EC at Excel.Workbooks.Open
 

Hi,

I am getting the following error after deploying to Server 2008 from Server
2003:

Exception from HRESULT: 0x800A03EC at Excel.Workbooks.Open

I have added all required security settings, dcom configuration, and
assemblies to the server, and still continue to get this error. I know this
code works so I'm not sure why Server 2008 would work differently. This
method gets called from a Web Service if it matters at all. Also, we are
going from IIS 6 to IIS 7.

Any suggestions?