Could not load type Microsoft.Office.Interop.Excel._Application

Question

I\'m getting a error when I try to debug a code that reads Excel files. I\'m wondering if the reference to \'Microsoft.Office.Interop.Excel._Application\' is wrong, I get th

Answer 1

It sounds like you have a bad reference, not bad code. Has this code ever worked? Have you tried removing the reference to the Excel Interop and re-adding it again? Since it doesn't even get into your method, my assumption is that when the system tries to load the reference dll, it crashes.

Answer 2

vcsjones commend got me on the correct track. after turning off Embedding Interop Assemblies I needed to edit the web.config to trust Excel

<system.web>
    <trust level="Full" originUrl="" />