VCAC6.0.1 with vCenter5.5 provision Win7

Hi,

I have a question here.

I have a blueprint that allow user to provision 1-5 VM per request.

I have windows 2012R2 and Win7 ent 64bit tamplate.

using the same customize spec.
Window 2012 able to provision 5 VM without issue.
When request for 5 x Win 7, the 4th VM always have a network issue.
The setting in vCenter, LAN port is not "Connected", "connect at power on" is tick.

if I change the network, tick the connect, and change back the network, the provision will carry on, but it already past the customize spec stage so it didn't join domain.

Anyone have see this before?

Thanks in adv