Cannot Access Shared Files

I am trying to create a cluster. I keep getting a connection error when running cluster validation wizard. So i can't run the test. I decided to share a file on each node.

I noticed that from my workstations and my domain controller I can go to my Network and all my computers and server icons pop up. When i click both node a and b from my domain controller I can access the shared file fine. But when i try to access node b's shared folder from node a it times out. the same is also true when I try to access node a's shared frolder from node b.

is this a DNS issue? Also i notice I see the little exclamation point show up on my little network connection icon in the bottom right hand corner, however all my ip setting and dns settings are correct on the NICs.

Any suggestions?