SymptomsA client has the .htaccess file under the httpdocs directory. This file can be seen in the Plesk file manager, but it is not shown if you access the site via FTP.
CauseFiles whose names begin with a period (dot) are hidden in the UNIX environment by default. The same rule applies if you access them via FTP.
ResolutionIf you use the command line FTP client, you can run the "ls -al" command and it will show all files. Also, some FTP clients provide an option by which one can "unhide" hidden files via a preference setting.
Another way to resolve the issue is to set up the FTP server to always show files that begin with a period by editing /etc/proftpd.conf; simply add this line: