#Plesk Error Failed to retrieve directory listing happens when #FTP cannot connect successfully.
However, it failed at the directory listing stage. It occurs if the ProFTPd passive mode is not configured on the server.
To fix this error >> https://ibmimedia.com/blog/126/solve-plesk-error-failed-to-retrieve-directory-listing
proftpd failed to retrieve directory listing
filezilla failed to retrieve directory listing
plesk ftp not working
plesk ftp connection timed out after 20 seconds of inactivity
error listing directory
plesk ftp passive mode not working
directory not listing in ftp
plesk ftp connection refused