I am setting up a study lab on my Windows 7 workstation. I have VMware Workstation installed and have setup an evaluation version of Server 2012 R2 as a VM. So far so good. It is activated by using NAT and I have 180 days to play with it. Well, I also need an installation of Server 2012 R2 Server Core. I took the same ISO file and installed a copy of Server 2012 R2 Server Core as an additional VM. The problem I am having is that it will not activate. I am in the midst of the 10 day countdown. I have the same NAT setup as the other VM, but can't seem to get it to activate. I am getting the necessary IP configurations. I can ping yahoo.com. Any ideas?