LUID

An LUID is a 64-bit value guaranteed to be unique only on the system on which it was generated. The uniqueness of a locally unique identifier (LUID) is guaranteed only until the system is restarted.

An LUID is not for direct manipulation. Applications are to use functions and structures to manipulate LUID values.

typedef struct _LUID {
  DWORD LowPart;
  LONG HighPart;
} LUID, *PLUID;

Requirements

  Windows NT/2000: Requires Windows NT 3.1 or later.
  Header: Declared in Winnt.h; include Windows.h.

See Also

Access Control Overview, Access Control Structures, AllocateLocallyUniqueId, LookupPrivilegeName, LookupPrivilegeValue, PrivilegeCheck, LUID_AND_ATTRIBUTES, PRIVILEGE_SET