It won't delete the history!

My main problem is that, even though I delete my
history it just comes back.

I open smartftp, delete my history, then close
smartftp.

I open smartftp again, and my history is there again!

why?

is there a manual way to delete it. Where is this data stored?

Have you enabled "Save History"? It is a little odd, but to save the history means to "save any changes made to the history". As deleting the history is a change, this has to be enabled in order to delete the history permanently. Also see https://www.smartftp.com/forums/cant-cle ... t8896.html.