NtLockProductActivationKeys - NtDoc

#ifndef _NTREGAPI_H

/**
 * Locks the product activation keys.
 * 
 * @param pPrivateVer Optional pointer to a private version variable.
 * @param pSafeMode Optional pointer to a safe mode variable.
 * @return NTSTATUS Successful or errant status.
 */
NTSYSCALLAPI
NTSTATUS
NTAPI
NtLockProductActivationKeys(
    _Inout_opt_ ULONG *pPrivateVer,
    _Out_opt_ ULONG *pSafeMode
    );

#endif
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#ifndef _NTZWAPI_H

NTSYSCALLAPI
NTSTATUS
NTAPI
ZwLockProductActivationKeys(
    _Inout_opt_ ULONG *pPrivateVer,
    _Out_opt_ ULONG *pSafeMode
    );

#endif
View code on GitHub