Aftermatch GFSDK_Aftermath_Result_FAIL_NvApiIncompatible

I am using aftermath to debug some gpu crash, when I initialize aftermath, PFN_GFSDK_Aftermath_DX11_Initialize have a error, the error code as fallow。

// Make sure that the NvAPI DLL is up to date.
GFSDK_Aftermath_Result_FAIL_NvApiIncompatible = GFSDK_Aftermath_Result_Fail | 7,

I have checked the version of my nvapi64.dll which is in C:\Windows\System32 ,the signature time is ‎2017‎.2‎.23‎ 15:34:17

Can somen one tell me why this happens?