Using CompleteFTP and IIS on the same server

Question

I have a Windows 2019 server that I want to put CompleteFTP on. First, I tried using a shared IP address, as I assumed that CompleteFTP would use SNI and would not conflict. That gave an error, so I assigned a unique IP, and CompleteFTP still complained about the conflict, even though I had no sites bound to the IP. I am using HTTPS, not HTTP. Do you not play well with others?

Answer 1

CompleteFTP binds to a port on an IP address, and so it requires that the IP address and port combination is unique. If there's a conflict, it's because another program is listening on the same port number on the same interface.