At last the problem has been resolved, i have done the following things.
1)Start the sql database services with the active directory domain adminstrator account, because i have installed the database with domain administrator credential.
2)change the sql authentication mode from windows only to sa and windows authentication and enabled the sa account.
3)then i have access the page"https://win2k8mco1:8443/core/config-auth it show me the same error then i replace win2k8mc01 with the "localhost " then it show me the epo console page i have enter the credential then it show me the connection pages i have reentered the password and test connection connection its successful.
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