Can't poll Windows Server 2012 R2

Just set up a WS 2012 R2 eval and can't seem to be be able to poll with Firewall on. With this:

I get this in SAM 6.1.1:

With this:

... and this:

... I get this:

This is a fresh WS install, workgroup environment; I did have to manually change the network to "private":

Other than that, can't think of any changes to the VM.

Would appreciate any ideas. Thanks!