The CMachineId structure is used to represent a MachineID, which is a unique identifier that represents the identity of a computer.

 typedef struct CMachineId {
   char _szMachine[16];
 } CMachineId;

_szMachine: This member MUST be a NetBIOS name, as specified in [RFC1088]. This name MUST be terminated with a zero byte, and any remaining bytes MUST also be zero.