407 Authentication Required Npm
Answer : I recommend reading through this article to configure the proxy for npm. http://wil.boayue.com/blog/2013/06/14/using-npm-behind-a-proxy/ npm config set proxy http://proxy.company.com:proxyport npm config set http-proxy http://proxy.company.com:proxyport npm config set https-proxy http://proxy.company.com:proxyport Hope this is useful for you! Usually, when you are behind a corporate proxy, it is needed to add the domain where you are at. Given that also the characters should be URL encoded, it would look like: https://domain%5Cusername:password@proxy:port We should add proxy with username and password to avoid this error. For example: username: admin password: admin123 proxy: 172.10.3.21 port: 3128 npm config set proxy http://admin:admin123@172.10.3.21:3128 npm config set https-proxy http://admin:admin123@172.10.3.21:3128