ubuntu - Cron Authentication Failure error in Linux
After useradd, can not su - <newuser>; Authentication failure Aug 28, 2019 PostgreSQL: password authentication failed for user Aug 24, 2016 debian - Postfix "SASL authentication failure: No worthy
Enterprise/Authentication - Ubuntu Wiki
May 05, 2012 Ubuntu 18.04 Setup SSH Public Key Authentication - nixCraft Oct 24, 2018
In Ubuntu, by default, there is not really a root user, but only root access which can be gained using sudo, for instance, to update your repository list: Password: su: Authentication failure' when I try to use super user. And I didn't understand anything that was said in this …
Oct 17, 2016 Ubuntu Forums