SCVMM 2012 SP1: P2V of XP SP3 is not supported
Have you tried to convert XP SP3 machines with VMM 2012 SP1. Well, per TechNet, P2V Prerequisites, P2V of XP SP3 machines is not supported with VMM 2012 SP1 (you
List of KBs for SCVMM 2012 SP1
A list of KBs for SCVMM 2012 SP1 has been published in TechNet wiki. Wiki content might get updated when new KBs are released, check it out : http://social.technet.microsoft.com/wiki/contents/articles/15364.list-of-public-microsoft-support-knowledge-base-articles-for-system-center-2012-virtual-machine-manager-service-pack-1.aspx
SCVMM 2012 SP1 Install Notes and Steps
After I downloaded SP1 RTM bits, I decided to go through the installation once more and check out the VMM SP1 RTM requirements. I will be going through the install