a few months ago I rented a vServer and am using WinSCP as the (S)FTP (SSH File Transfer Protocol) Client for accessing it. But recently, WinSCP has started prompting me for a password everytime changing the first file in the current session. It didn't do that before. After i entered the password, it doesn't prompt me again for the whole session.
By the way: If i start a new session, I can delete and move files without WinSCP prompting me for a password. It only prompts for the first file edit.
So, this wouldn't be a problem, but I am using Fail2Ban on my vServer and noticed that - when WinSCP tries to upload the edited file and prompts me - it generates a ssh "password failed", leading fail2ban to ban my ip after a couple of times.
PS: The problem started occuring without any event or change in configs, etc. taking place before. WinSCP just randomly started prompting me.
So the main question: Does anyone know why WinSCP keeps prompting me or how I can solve this issue? Every help is appreciated! Thanks already.
Client Operating System: Microsoft Windows 10 [Version 10.0.19041.610]
Server Operating System: latest Linux Debian 10 (Buster) - all installed packages are latest version too
WinSCP Version: 18.104.22.16840 (GUI)
Passwort Length: 800 - I am kinda paranoid, so don't ask (I only mention this, because I thought that the length might be a problem? like WinSCP failing at storing the password for the session or something like that. but since it works after the prompt it can't be that really.)
Protocol: SSH File Transport Protocol
Logs: I decided against uploading the auth.log since its just a generic "failed password" info. I checked for other errors or messages, but theres nothing than this.
Disclaimer: Sorry if my english is bad, it's not my native language.