On Microsoft Dynamics CRM 4 this error comes due to the follow reason. If MS Asynchronous service has been disabled or stopped then following error occurs.
CRM 2011: This workflow job was canceled because the workflow that started it included an infinite loop. Correct the workflow logic and try again. For information about workflow logic, see Help.
sometimes this error comes up when connecting to CRM through visual studio The provided uri did not return any Service Endpoints!