AllocateLocallyUniqueId function (securitybaseapi.h)

The AllocateLocallyUniqueId function allocates a locally unique identifier (LUID).

Syntax

BOOL AllocateLocallyUniqueId(
  [out] PLUID Luid
);

[out] Luid

A pointer to a LUID structure that receives the allocated LUID.

If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero. To get extended error information, call GetLastError.

The allocated LUID is unique to the local system only, and uniqueness is guaranteed only until the system is next restarted.

The allocated LUID is guaranteed to be nonzero if this function succeeds.

Requirement	Value
Minimum supported client	Windows XP [desktop apps \| UWP apps]
Minimum supported server	Windows Server 2003 [desktop apps \| UWP apps]
Target Platform	Windows
Header	securitybaseapi.h (include Windows.h)
Library	Advapi32.lib
DLL	Advapi32.dll