Virtual host challenges DocumentRoot must be set for whatever port `*.80` or `*.443` that you wish to direct to. https://community.letsencrypt.org/t/problem-binding-to-port-80-could-not-bind-to-ipv4-or-ipv6/60527 : To use –standalone you must stop your apache before you run certbot. The standalone spins up a temporary web service to enable responses to the challenge request. This is only used when there is…