OK, case closed. I leaned two things today:

1. I had to use "ftpes://..." and not "ftp://..." to define the protocol as I had been doing. Something my Host failed to inform me about, and I only discovered it when trying out the "Session/Generate session Url" from the WinSCP GUI. I had tried "ftps://..." but that failed. I would never have guessed in a million years that it should be "ftpes".

and

2. If the Certificate is unauthorised then I have to use the "-certificate" parameter on the "open" command, not the "/certificate" parm.

TLS is kicking in and it's all working nicely now. Thanks for looking.

Bill

I have finally got my first WinSCP script to work using the FTPS protocol. The upload to my website works fine but the log appears to be telling me that standard FTP was used for the transfer:


Here's my BAT file:


and the script:


The Certificate was copied and pasted from its source so it is correct and there are no error messages given. I really need encrypted transfer and my Host does not permit SFTP, so I'd be grateful if some kind person could tell me what I'm doing wrong here.

Bill