Check Node & NPM version Verify that you are running at least node 6.9.x and npm 3.x.x by running node -v and npm -v in a terminal/console window Install angular CLI Enter below command to install angular cli npm install -g @angular/cli How to use NPM commands behind the PROXY 🛠 Step to access to use npm commands behind the PROXY 🛠 Set SSL false by executing this command: npm set strict-ssl false npm config set registry http://registry.npmjs.org/ Then, Get any one of the below: 1. User-specific -  username : password @proxy.example.com:1431 (User Proxy) 2. Proxy: 129.***.**.**:** (Proxy address with port#) Now, set appropriate by executing below npm  commands: npm config set http http://username:password@proxy.example.com:1431 npm config set https-proxy https://username:password@proxy.example.com:1431 (or) npm config set http_proxy 129.***.**.**:** npm config set https_proxy 129.***.**.**:** Now, all set...