[windows] Curl not recognized as an internal or external command, operable program or batch file

I have installed curl and have set it as environment variable in my system. But when running the curl command its giving an error 'curl' is not recognized as an internal or external command, operable program or batch file.I tried restarting my system but is of no use.I want this to upload my application to HockeyApp. Please help me out.I am using Windows 8.1.

Here you can find the direct download link for Curl.exe

I was looking for the download process of Curl and every where they said copy curl.exe file in System32 but they haven't provided the direct link but after digging little more I Got it. so here it is enjoy, find curl.exe easily in bin folder just

unzip it and then go to bin folder there you get exe file

link to download curl generic

Method 1:\

add "C:\Program Files\cURL\bin" path into system variables Path right-click My Computer and click Properties >advanced > Environment Variables

Method 2: (if method 1 not work then)

simple open command prompt with "run as administrator"