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PS C:\Windows\system32> WinSCP.com /log="C:\writable\path\to\log\WinSCP.log" /ini=nul /command "open sftp://user:password@example.com/ -hostkey=""ssh-ed25519 256 1d:de:80:c5:4f:d6:72:1d:be:94:51:6b:53:9a:93:4e"""
Error occurred during logging. It's been turned off.
Can't open log file 'C:\writable\path\to\log\WinSCP.log'.
System Error. Code: 2.
The system cannot find the file specified
Searching for host...
Connecting to host...
Authenticating...
Host key does not match configured key "ssh-ed25519"!
Host key fingerprint is ssh-ed25519 256 1d:de:80:c5:4f:d6:72:1d:be:94:51:6b:53:9a:93:4e.
Authentication failed.
"open sftp://user:password@example.com/ -hostkey=""ssh-ed25519 256 1d:de:80:c5:4f:d6:72:1d:be:94:51:6b:53:9a:93:4e"""
'open sftp://user:password@example.com/ -hostkey="ssh-ed25519 256 1d:de:80:c5:4f:d6:72:1d:be:94:51:6b:53:9a:93:4e"'
"open sftp://user:password@example.com/ -hostkey=`"ssh-ed25519 256 1d:de:80:c5:4f:d6:72:1d:be:94:51:6b:53:9a:93:4e`""
PS C:\Windows\system32> WinSCP.com
winscp> open sftp://user:password@example.com/ -hostkey="ssh-ed25519 256 1d:de:80:c5:4f:d6:72:1d:be:94:51:6b:53:9a:93:4e"
Searching for host...
Connecting to host...
Authenticating...
Using username "user".
Authenticating with pre-entered password.
Authenticated.
Starting the session...
Session started.
Active session: [1] user@example.com
winscp>
"open sftp://user:password@example.com/ -hostkey=*"