When you try to install the original release version of Microsoft SQL Server 2005 or Microsoft SQL Server 2005 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 $INSTANCENAME’ not found. Check the name again. Refer to the server error logs for detailed error information.

This problem occurs if the following conditions are true:

• The name of the computer that is running Windows Vista consists of lowercase characters or of a mixture of lowercase characters and uppercase characters. For example, the name of the computer resembles the following name:
  

  Workstation-1

• You specify a case-sensitive collation setting for the SQL Server service when you install SQL Server 2005.

Note: In some cases, this problem may occur if the name of the computer contains some special characters. For example, this problem may occur if the name of the computer contains some characters in Turkish.