Once SMS 2003 Upgraded you must delete these accounts ; SMS 2003 accounts delete
Always Delete The following accounts should always be deleted because they are never used for Configuration Manager 2007. SMS Service account CCM Boot Loader (DC) (SMS#_dc) CCM Boot Loader (Non-DC)( SMSCCMBootAcct&) Client Services (DC) (SMS&_dc) Client Services (Non-DC) (SMSCliSvcAcct&) Client User Token (DC) (SMSCliToknAcct&) Client User Token (Non-DC) (SMSCliToknLocalAcct&) Client Connection (SMSClient_sitecode) Legacy Client Software … Read more