hI Prachand
I already loaded symantec corporate edition client and it is functional .
I don't want to format that pc since apart from this issue else everything is working fine..
Now symantec 10.0 corporate client is also working fine
Thanks anyway for all of your help but my advice to all in symantec company is try to find a solution rather to provide a format solution
I know all in the forum are striving hard to provide the solution but the symantec antivirus & security products have to be improved a lot in these type of installation,reinstallation problems.
N.B: In the same pc as I stated earlier kasperksy got installed properly and I uninstalled it and installed symantec client 10.0
Thanks
Swaminathan