The NetLogon service on this domain controller has been configured to use port %1 for incoming RPC connections over TCP/IP ...

The NetLogon service on this domain controller has been configured to use port %1  for incoming RPC connections over TCP/IP from remote machines. However, the  following error occurred when Netlogon attempted to register this port with the RPC  endpoint mapper service: 
%2 
This will prevent the NetLogon service on remote  machines from connecting to this domain controller over TCP/IP that may result in  authentication problems.    

USER ACTION    
The specified port is configured via the Group Policy or via a registry value 'DcTcpipPort'  under the 'HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services
etlogon\Parameters'  registry key; the value configured through the Group Policy takes precedence. If the  port specified is in error, reset it to a correct value. You can also remove this  configuration for the port in which case the port will be assigned dynamically by  the endpoint mapper at the time the NetLogon service on remote machines makes RPC connections  to this domain controller. After the misconfiguration is corrected, restart the NetLogon  service on this machine and verify that this event log no longer appears.