nrfutil.exe keys generate private.key failed to create process.

[Deepansh]

i have downloaded python (Python 2.7.13 (v2.7.13:a06454b1afa1, Dec 17 2016, 20:42:59) [MSC v.1500 32 bit (Intel)] on win32) on window 10 in cmd successfully. and pip also. i seccessfully done pip install nrfutil.... with the command in cmd. and also pip install nrfutil --upgrade both command is running successfully

still when i am trying to run (nrfutil.exe keys generate private.key) in cmd it is saying failed to create process. so what is the problem in this nrfutil.png 

[Hung Bui]

Hi Devang, please udpate the question with a screenshot when the error occurs. If you do "nrfutil version" what do you have on the screen ?