Error showing npm:
npm ERR! Windows_NT 6.1.7601 npm ERR! argv "C: \ Program Files \ nodejs \ node.exe "" C: \ Program Files \ nodejs \ node_modules \ npm \ bin \ npm-cli.js "" install "" -g " "@ angular / cli" npm ERR! node v6.11.4 npm ERR! npm v3.10.10 npm ERR! code ECONNRESET
npm ERR! network tunneling socket could not be established, cause = connect ECONNREFUSED 127.0.0.1:80 npm ERR! network This is most likely not a problem with npm itself npm ERR! network and is related to network connectivity npm ERR! network In most cases you are behind to proxy or have bad network settings. npm ERR! network npm ERR! If you are behind a proxy, please make sure that the npm ERR! network 'proxy' config is set properly. See: 'npm help config' npm ERR! Windows_NT 6.1.7601 npm ERR! argv "C: \ Program Files \ nodejs \ node.exe "" C: \ Program Files \ nodejs \ node_modules \ npm \ bin \ npm-cli.js "" install "" -g " "@ angular / cli"