ORA-12518: TNS:listener could not hand off client connection ORACLE XE 11.2 x64

Im starting to be very very frustrated by this Oracle.
So, I have installed Oracle XE 11.2 64 bit and ODAC121012_x64.

I can start listener, I can do tnsping xe, but when I try to connect as via sqlplus as system Im getting:

ERROR:
ORA-12518: TNS:listener could not hand off client connection

Here are my config files:

tnsnames.ora:

XE =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = XE)
    )
  )

EXTPROC_CONNECTION_DATA =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
    )
    (CONNECT_DATA =
      (SID = PLSExtProc)
      (PRESENTATION = RO)
    )
  )

ORACLR_CONNECTION_DATA = 
  (DESCRIPTION = 
    (ADDRESS_LIST = 
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1)) 
    ) 
    (CONNECT_DATA = 
      (SID = CLRExtProc) 
      (PRESENTATION = RO) 
    ) 
  ) 

listener.ora:

SID_LIST_LISTENER =
  (SID_LIST =
     (SID_DESC =
                           (SID_NAME = XE)
       (ORACLE_HOME =  C:oraclexeapporacleproduct11.2.0server)
     )

    (SID_DESC =
      (SID_NAME = PLSExtProc)
      (ORACLE_HOME = C:oraclexeapporacleproduct11.2.0server)
      (PROGRAM = extproc)
    )
    (SID_DESC =
      (SID_NAME = CLRExtProc)
      (ORACLE_HOME = C:oraclexeapporacleproduct11.2.0server)
      (PROGRAM = extproc)
    )
  )

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
      (ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))
    )
  )

DEFAULT_SERVICE_LISTENER = (XE)

sqlnet.ora:

# This file is actually generated by netca. But if customers choose to 
# install "Software Only", this file wont exist and without the native 
# authentication, they will not be able to connect to the database on NT.

SQLNET.AUTHENTICATION_SERVICES = (NTS)

help is very needed and will be even more appreciated!