Problem binding to port 80: Could not bind to IPv4 or IPv6.

Aug 2024 1 min read Aleksey Dorogov

sudo certbot certonly --standalone --rsa-key-size 4096 --agree-tos --preferred-challenges http -d your_domain

try to disable nginx for a while and then start it again

service nginx stop
service nginx start

Sitting on a version of this problem right now? I'd rather look at it than guess.