windows 2012 client is not showing up on nbu console

I installed client agent v7.6.0.1 on a windows 2012 VM but it's not showing up on the nbu console. My NBU server is also v7.6.0.1 Based on the installation doc, I disabled UAC in control panel & also login locally with the administrator account. I tried this on another windows 2012 VM & am having the same problem. Has anyone seen this? Please help!