Been using WinSCP for about 5 years with no issues until the last update. SFTP will not load now.

When logging in SFTP hangs up and will not load, then after a while I get this error:

The server rejected SFTP connection, but it listens for FTP connections.

Did you want to use FTP protocol instead of SFTP? Prefer using encryption.

When using FTP I cannot use it for my server.
This all started after the last update.

So if you downgrade, does it start working again?
You can download the previous version here:
https://sourceforge.net/projects/winscp/files/WinSCP/
If it works with the previous version, please post session log files from both versions.