One of the advantages of a Technet subscription is access to the (MDOP Microsoft Desktop Optimization Pack) software including the Diagnostics And Repair Toolkit (DART). Unfortunately it took me a while to find it under the downloads today as MDOP does not appear under the list of downloads. However searching for Desktop Optimization Pack finds it. (You need to log into the Subscriber Downloads for this link to work). You’d be surprised how inaccurate the Google results for MDOP download on Technet results are.