Is anything special required to access OWC11 on server? I have interop.owc11.dll in bin directory, and same code that I have used successfully on another hosting site to create spreadsheet object set x = CreateObject("OWC11.Spreadsheet") Error message I get says cannot Create ActiveX component. [Exception: Cannot create ActiveX component.] Microsoft.VisualBasic.Interaction.CreateObject(String ProgId, String ServerName) +211 ADS.Pedra.Web.Business.DealEvaluation.Eval.InitializeSpreadsheet() in C:\projects\Pedra\DealEvaluation\Eval.vb:62
Please see the following blog post http://blog.discountasp.net/excel-integration-without-owc-or-interoperability/