I have to migrate a web site written in VB.net/ASP.NET calling a foxpro dll from WinServ 2003 to WinServ 2012R2.
The website worked fine on the 2003 server. I migrated everything, and after some issues with .NET versions and getting acquainted with the new IIS version, I am nearly there.

- The website works completely fine from within Visual Studio, when I either choose "Start debugging" or "Start Without Debugging".
- I have registered the dll successfully with regsvr32 (in a CMD-box as admin).
- In the VFP Object browser, I can find the object admininterface01

But when I run the site from inside IIS or from "outside" the code runs until the first mentioning of the Foxpro-dll:

Dim objDll As New admininterface01.iFoxClient01

The procedure stops there, and the exception message is:

Retrieving the COM class factory for component with CLSID {77413410-C29F-4F31-BE33-323CB70BA25E} failed due to the following error: 80040154 Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)).

Is it a 32/64 bit problem?

Any help appreciated!