1.Open Computer properties
as in picture.
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2.A|Press advanced system settings
B|Then Press advanced
C|Press settings
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3-select data execution prevention
select expt those (option)
click on add and add the Acc Serv,MSGserv,NPCServ,Soul.exe
Your Problem should be fixed now, i had faced this problem before, first i checked the ports,anti-virus(MCafee),FireWall. and then got to this solution
Hope it fixes it