I seems that you have put the open command directly to the batch file.

See https://winscp.net/eng/docs/guide_automation

Martin,

I did that to create my script file and got the following errors when trying to run the BAT file from powershell:

open is not recognized as an internal or external command, operable program or batch file
lcd is not recognized as an internal or external ....

Chris

Just use Protocol.S3 and your Access key ID and Secret access key as username and password
See https://winscp.net/eng/docs/guide_amazon_s3
The easiest is to set up the login in WinSCP GUI and have it generate code template for you:
https://winscp.net/eng/docs/ui_generateurl#code

Hi,

I am hoping to use WinSCP to automate a nightly upload to my S3 bucket of some vdhx files. The documentation only shows using FTP/SFTP. Is there any way to link this to my S3 bucket instead?

Chris