I am trying to install Angular 2. I installed node 6 ( along with which npm got installed automatically ). But then when I am trying to install the CLI to complete the Angular 2 installation process by running the command, npm install -g angular/cli , I am getting the below error. I ran the command promt as admin too, but still the error persists. Any help is very much appreciated.

try this
npm config set strict-ssl false
related github issue here: https://github.com/npm/npm/issues/14667
btw: Aravind is wrong about @angular/cli. please go to homepage to check this package name.