Well, you have to store the password somewhere.

The only alternative (if you are using SSH [SCP/SFTP]) is to use Pageant:
https://winscp.net/eng/docs/public_key

I have searched this forum, but did not see the answer.

I use WinSCP with a small batch script running by scheduler.
Is there any way to avoid storing the session password in the batch file?

Thanks
Mario