Problem Description
- You're connecting to a Plesk-powered CentOS 7 server via FTP or SFTP
- The app you're using to connect indicates the username or password is incorrect, but if you keep retrying you might successfully connect 10% of the time
- You have already reset the password for the FTP account on the server at least twice to be 100% sure it's the correct value
Problem Resolution
This is can be an issue with the file system and/or the systemd-logind service. To resolve it, run these commands (replacing <domain> with the domain):
plesk repair fs <domain>
systemctl restart systemd-logind
