All of my task sequences work fine but when I start the sysprep portion of the capture the VM hangs during the generalize phase (literally the screen stops redrawing, no CPU activity shows in hyper-V, etc). I've never seen this before while syspreping. At one point I had a bluescreen/frowny face during sysprep which I resolved and I do remove and de-provision all the windows store apps. I've started from a completely clean task sequence from the defaults in MDT and it still does the same thing. I have mixed feelings on the 'blocking windows 10 reference image from internet during build' stuff I have seen. From what I understand people only say this so that store apps don't get installed and you need to remove them. I was using MDT 2013 update 1 and was having the issue so I upgraded to MDT 2013 update 2 hoping it would be resolved but no go. I found one person on this forum who was having the same issue and he rebuilt the server which I am trying to avoid until I understand the underlying cause of the issue.