I've so far been able to use google cloud sdk to try and connect to a VM instance on google cloud it also created a .ssh folder on my windows user account and at the same time a new user on the online VM with a similar name "DIGIVILLE"
here's the output from filezilla
Status: Waiting to retry...
Status: Connecting to 35.185.21.196...
Response: fzSftp started
Command: keyfile "C:\Documents and Settings\DIGIVILLE\.ssh\google_compute_engine.ppk"
Command: open "root@35.185.21.196" 22
Error: Disconnected: No supported authentication methods available (server sent: publickey)
Error: Could not connect to server
Status: Connecting to 35.185.21.196...
Response: fzSftp started
Command: keyfile "C:\Documents and Settings\DIGIVILLE\.ssh\google_compute_engine.ppk"
Command: open "digiville@35.185.21.196" 22
Error: Disconnected: No supported authentication methods available (server sent: publickey)
Error: Could not connect to server
Status: Waiting to retry...
Status: Connecting to 35.185.21.196...
Response: fzSftp started
Command: keyfile "C:\Documents and Settings\DIGIVILLE\.ssh\google_compute_engine.ppk"
Command: open "digiville@35.185.21.196" 22
Error: Disconnected: No supported authentication methods available (server sent: publickey)
Error: Could not connect to server
and the settings
including the ppk file