407 Proxy Authentication Required Error Solution

If your company's network architecture is online through a proxy server, then Ubuntu will have problems when using apt-get updates. Even if you have configured a system wide proxy server. Usually when you execute apt-get update and other commands, the following error will occur: 407 Proxy Authentication Required is very simple, we just need to change the apt-get configuration file, modify the contents of /etc/apt/apt.conf : $ cat /etc/apt/apt.conf Acquire::http::proxy "http://username:passowrd@proxy:80/"; Acquire::ftp::proxy "ftp://username: Password@proxy:80/";Acquire::https::proxy "https://username:password@proxy:80/"; username, password, proxy, and port must be modified according to the actual. This will update the system.