VNC HP-UX Cannot establish any listening sockets

Error while starting the VNC

#vncserver :1


XSERVTransSocketUNIXCreateListener: ...SocketCreateListener() failed
_XSERVTransMakeAllCOTSServerListeners: server already running
Fatal server error:
Cannot establish any listening sockets - Make sure an X server isn't already running


Solution:

Check in  /var/spool/sockets/X11 any old unused sockets ( above case socket number will be 1 ) and remove that one.