Can you please post the logs?
I am transferring a bunch of files from various FTP accounts using a script and this error just stops it all. I managed to do the same operation using the WinSCP GUI. This FTP client is not at all stable when you have to synchronise a couple of gigabytes of data!
Can you login to that server anyhow from the same machine? E.g. using WinSCP GUI? Or any other SFTP or SSH client? Please post some log files documenting that.
We are using winscp dll version 5.5.3 to transfer file to SFTP. We are getting the error as "Server sent disconnect message type 11 (by application)" and the file is not transferred.
We are facing this issue in our Production environment. Please assist to the earliest.