SEP 14 - RDP Access is Denied

Need some help. Whenever I go to use RDP to a server, I have no issue what so ever connecting. Once the connection starts to load my desktop, I get "Access is Denied" for all users. If I disable Symantec, no one has any issues. All necessary users have permissions to remote in. I have made sure that 3389 is open on the firewall (even though we are making it past that point).