configmgr console connection

Hi Team, After installing the Configuration Manager Console it's not connecting to CAS server. We are able to connect CAS server through RDC(mstsc) using 5616 port no. Kindly advice. SMSAdminUI.log details [4, PID:16356][01/06/2021 19:54:39] :System.Runtime.InteropServices.COMExceptionrnThe RPC server is unavailable. rn at System.Runtime.InteropServices.Marshal.ThrowExceptionForHRInternal(Int32 errorCode, ...