When you try to install Microsoft SQL Server 2005 Express Edition Service Pack 1 (SP1) on a computer that is running Windows Vista, you receive the following error message:

SQL Server Setup failed to execute a command for server configuration. The error was [Microsoft][SQL Native Client][SQL Server]Windows NT user or group ‘COMPUTERNAME\SQLServer2005MSSQLUser$COMPUTERNAME$MSSQLSERVER’ not found. Check the name again.. Refer to the server error logs for detailed error information.