ORA-12518: TNS:listener could not hand off client connection (Windows Error : 203) - 12c Pluggable D

I'm trying to play with Oracle 12c on Windows.

I've installed Oracle 12.1.0.1 on Windows 8 64 bit machine.

I'e created a pluggable database ORCL but I'm finding it difficult to connect to it.

I don't find any issues connecting to the global database - TEST (container db) through tns.

whenever I try connecting to ORCL using

username/password@orcl

I face the below error

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

Listener.log

05-MAY-2014 03:13:34 * (CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=ORCL)(CID=(PROGRAM=F:\Oracle\product\12.1.0\db_1\bin\sqlplus.exe)(HOST=DBTEST)(USER=test?-?test))) * (ADDRESS=(PROTOCOL=tcp)(HOST=1xx.1yy.0.17)(PORT=20895)) * establish * ORCL * 12518
TNS-12518: TNS:listener could not hand off client connection
TNS-12560: TNS:protocol adapter error
  TNS-00530: Protocol adapter error
   64-bit Windows Error: 203: Unknown error