Flow Action with SFTP step fails after upgrade with error : 'Failed to authenticate with user: <username>' - Support and Troubleshooting

Flow Action with SFTP step fails after upgrade with error : 'Failed to authenticate with user: ' Issue SFTP connection is throwing authentication error after upgrading to Vancouver or later releases.

Error message: "Failed to authenticate with user: "

Cause The flag mid.ssh.auth.fallback_to_password is introduced in Vancouver version onwards. By default its value is false, in case private key authentication fails it will not go for password authentication from Vancouver onwards. When you set mid.ssh.auth.fallback_to_password value to true, if private key authentication fails it will fall back to password authentication from Vancouver onwards.

Resolution 1) Go to Mid Servers 2) Navigate to configuration parameters and added the following configuration parameter mid.ssh.auth.fallback_to_password - set to true 3) An additional configuration parameter was also hardcoded and set mid.ssh.use_snc - set to true

Ensure the mid server service account has permission