Server refused our key WinSCP

When trying to connect to WinSCP server we get below error message

Server Refused Our Key

We are using passphrase to login and open session for WinSCP.
Note: We are able to connect using the local password for the username but not using the passphrase.

Are you able to authenticate using this key with any other SFTP/SSH client?
If you are, please post its verbose log file.
As well as WinSCP session log file.