New DPM solution: "DPM encountered a retryable VSS error" when trying to protect a Hyper-V VM that has Forefront TMG 2010 installed

Consider the following scenario: You install Microsoft Forefront Threat Management Gateway (TMG) 2010 Standard Edition on a Hyper-V virtual machine. You configure Forefront TMG 2010 to use all available space on one disk for Web caching. You protect this virtual machine by using System Center Data Protection Manager 2010 or System Center Data Protection Manager… Read more