NtUnloadKey2 - NtDoc

#ifndef _NTREGAPI_H

//
// NtUnloadKey2 Flags (from winnt.h)
//
//#define REG_FORCE_UNLOAD            1
//#define REG_UNLOAD_LEGAL_FLAGS      (REG_FORCE_UNLOAD)

NTSYSCALLAPI
NTSTATUS
NTAPI
NtUnloadKey2(
    _In_ POBJECT_ATTRIBUTES TargetKey,
    _In_ ULONG Flags
    );

#endif
View code on GitHub

#ifndef _NTZWAPI_H

NTSYSCALLAPI
NTSTATUS
NTAPI
ZwUnloadKey2(
    _In_ POBJECT_ATTRIBUTES TargetKey,
    _In_ ULONG Flags
    );

#endif
View code on GitHub