Issue Plesk not writing SFTP or FTP users to authenticate

[mobix]

We are experiencing an issue in which Plesk does not appear to be writing the users set up for SFTP or FTP to the operating system Ubuntu.
We have carried out checks on firewalls and the only firewall is the Ubuntu ufw. We can access SFTP direct through CLI and all seems to work, all ports open and passive FTP in place.
When we try to access FTP through WinSCP it fails, when we try to access through the backup solutions it fails. When we check the users we are trying to use are not listed in Unbuntu, though they show on Plesk.
Does Plesk not write these users to the platform to provide the access required. I understand from the documentation that the table for users is held within the operating system and this is why you cannot have two users with the same username for FTP even across different domains.

Any ideas please.

 

[Nik G]

hello @mobix ,
plesk uses system users to provide ftp access, so it record them to the usual place - /etc/passwd
in case you successfully can login under appropriate user via CLI - this mean that everything works fine.

to have ftp access turned ON you should have subscription with physical hosting.
also, what kind of error you receive when trying to login using winscp ?

do you have fail2ban installed? if yes - is it enabled for ftp protocol ?

did you try

plesk repair ftp

?