According to Microsoft’s doc Creating Shared Hosting Solutions on Windows SharePoint Services 3.0 available at office.microsoft.com/download/afile.aspx?AssetID=AM102157711033 "Also note that account creation mode is a deprecated feature of Windows SharePoint Services 3.0. Although this feature is supported through version 3.0, the product team recommends that customers plan to move off of it at their earliest convenience." … Continue reading Account Creation Mode not in SharePoint Foundation – deprecated with WSS 3.0