Ntquerywnfstatedata Ntdlldll Better -

: Ensure you are passing a valid WNF_STATE_NAME . Using incorrect or unauthorized state names can lead to access violations (0xc0000005) or system instability.

: Always initialize the BufferSize pointer correctly. If the provided buffer is too small, the function will return STATUS_BUFFER_TOO_SMALL , but an uninitialized pointer will cause an immediate crash. ntquerywnfstatedata ntdlldll better

Passing wrong buffers leads to crashes or STATUS_ACCESS_VIOLATION . You must thoroughly test on target Windows versions. : Ensure you are passing a valid WNF_STATE_NAME

To better discover available WNF states on your system, use: the function will return STATUS_BUFFER_TOO_SMALL

: Instead of subscribing and waiting for a callback to trigger, NtQueryWnfStateData

: ntdll.dll (The primary interface to the Windows Native API).