C# - COM Class Factory 80040154 Server Error?

I wasn't getting this error before on localhost, but now it's occurring when I uploaded my ASP.NET C# web app to the server. I've been looking for an answer how to fix this, but cannot seem to get rid of it. I have a Microsoft.Office.Interop.Excel DLL which I am trying to use to export data from a dataset to excel. I was told by customer service that the domain that I have registered is hosted on a 32-bit server.

Retrieving the COM class factory for component with CLSID {00024500-0000-0000-C000-000000000046} failed due to the following error: 80040154.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Runtime.InteropServices.COMException: Retrieving the COM class factory for component with CLSID {00024500-0000-0000-C000-000000000046} failed due to the following error: 80040154.

Source Error:

Line 499: object misValue = System.Reflection.Missing.Value;
Line 500:
Line 501: xlApp = new Excel.ApplicationClass();
Line 502: xlWorkBook = xlApp.Workbooks.Add(misValue);
Line 503: xlWorkSheet = (Excel.Worksheet)xlWorkBook.Worksheets.get_Item(1);