One new/old thing about File and Printer Sharing.
If you have Windows server 2012 Core or Hyper-V 2012 server you can face problems where you want to open admin shares on server. If you type \\servername\c$ you will receive error message that you can’t reach this share.
This is because File and Printer sharing is disabled by default in Windows Server 2012 and in Hyper-V 2012. To enable File and Printer Sharing in command prompt you must type:
netsh advfirewall firewall set rule group=”File and Printer Sharing” new enable=Yes
After this you will be able to reach admin shares on Windows Server 2012 Core and Hyper-V 2012.
This is applicable also to Windows Server 2012 with GUI.