Endpoint Protection

I have a client that had the latest policy but somehow pulled down an old one. The old policy should no longer exist as far as I know. Is there a setting I'm missing somewhere? I also tried to import the latest policy and it took but only until the client connected to SEPM at which point it pulled down the old one again. Any ideas? SEPM / Client is on RU5

stop smc
start run smc -stop
navigate to : C:\Program Files\Symantec\Symantec Endpoint Protection
delete the serdef.dat .bak( take a backup of it) 
update the policy


https://www-secure.symantec.com/connect/forums/endpoint-protection-client-using-old-non-existent-policies

Both SEPM and client having correct date/time settings.?
How many clients you are having this problem.?
Whether all of them are belongs to same group?

If it only one client try by repairing it from add/remove programs..

@ Rafeeq - thanks I will try your suggestion

@ AravindKM - Yes the time is correct on both now. There was an issue earlier in the week with daylight savings time change though. I have maybe 100 clients having this issue out 10k+...they are in different groups but each group may have multiple clients with wrong policy.

I tried both suggestions with no luck. Going to re-install. Will update once complete.

I removed SEP, ran cleanwipe, re-installed SEP. The client downloaded the old policy again so I'm stumped at this point. Could there be something hung up in the registry?

Remove SEP
Delete following folders if present
C:\Program Files\Symantec
C:\Program Files\Symantec AntiVirus
C:\Program Files\Common Files\Symantec Shared
C:\Documents and Settings\All Users\Application Data\Symantec

Also delete following reg keys
HKLM\Software\symantec
HKCU\Software\symantec
Install SEP and try..

Thank you AravindKM, this was this was the fix that worked for me.