Symptom
There are a lots of 02005 errors showing up in Task 3 of the deployment process when Require explicit FTP over TLS/SSL is checked in PowerServer Toolkit 2017 on Windows 7, Windows 8/8.1, Windows Server 2008, and Windows Server 2012.
Cause
It's probably a Windows problem.
Resolution
Install the corresponding Windows updates and try again in a full deployment mode.
See the following for details: