Ok, just found out. There’s no State Machine in the first version of Workflow Foundation 4.  It has been announced since april but just found out Use the following link to get the CTP, http://wf.codeplex.com/releases/view/43586 Some userfull links: http://www.microsoft.com/downloads/en/details.aspx?FamilyID=bd94c260-b5e0-4d12-93ec-53567505e685&displaylang=en