Your credentials like contained special characters than needed special encoding:
https://winscp.net/eng/docs/session_url#special
And the "Generate session code" feature took care of it.
https://winscp.net/eng/docs/ui_generateurl

I just used WinSCP to generate a BAT file for me then used it instead of storing in in a test file that is called by a bat file.

Also this is running as a batch file

Hey,
When using the WinSCP client I can login the the SFTP server but when I use a script it is throwing a "Authentication failed" error

Here is what I am using

Now the password is complex and has a lot of characters in it and this is connecting to a Azure host SFTP server. But again if I use the client it works fine. I must be missing something.