SMC stopes every time on SEP Client

hi,

I am having a server 2003 SP2 as a SEP client ,

i am facing issue that SMC service stopes and client showing offline in SEPM, when i start service from services it client comes online, but after some time it will again goes offile and service found stioed. also in SEPM client policy option is showing blank

i want to resolve issue without restarting