I am trying to create a file share for a server in Active Directory, but I cannot see the server I want to use.

I have two servers, one is Windows Server 2012 R2-GUI and the other is Core. The GUI is my primary AD DS and the DNS Server. The Core is my secondary AD DS and the DHCP Server. As a part of a homework assignment, I have to create three file shares on the Core Server: C:\Public, C:\Instructors, C:\Lessons.

I am using the GUI Server Manager>File and Storage Services to try and create Shares, but my Core Server will not show up. The closest thing I can find is an unreachable version of the server before I renamed and configured it.

I've tried searching the Microsoft Blogs and all over here to see if anyone else has had this problem, but nothing sounds quite the same. If you could help me understand the issue and how to fix it (if possible), I would really appreciate it!