PuTTY has no trouble connecting to this server.
I add the same private key and winscp can login.
I try another server with the same private key and it works.
but on this server, I keep getting this error.
Disconnected: No support authentication methods available (server sent: publickey,gsspi-keyex.gssapi-with-mic)
Using username "root"
Where do I find the authentication log?