Did you run this server as application server?
If yes, according to the MS article:
You cannot migrate the Application Server role from Windows Server 2003 to Windows Server 2008. It was rebuilt for Windows Server 2008, and it includes default support for applications that are built with .NET Framework 3.0 components,
such as Windows Communication Foundation (WCF), Windows Workflow Foundation (WF), and Windows Presentation Foundation (WPF). Application Server offers optional role services that activate features in Windows Server 2008 (such as Windows Process Activation
Service (WAS) support for non-HTTP protocols, TCP Port Sharing, and support for IIS 7.0). If you upgrade your server to Windows Server 2008 from Windows Server 2003 or an earlier operating system, and you want to use the capabilities of the
Application Server role, you must reinstall the Application Server role by using the Add Roles Wizard in Server Manager. If you configure Windows Server 2008 with the correct application services by using the Add Roles Wizard, your applications will work
correctly after you move them from Windows Server 2003 to Windows Server 2008.