Jenkins Publish over SSH issue

[Dwayne E Carter]

I am trying to execute an command via SSH using the "Publish over SSH" plugin, but this is the output I am getting:

SSH: Connecting from host [SVNXXXXXXXX]
SSH: Connecting with configuration [wasapp-t03] ...
SSH: EXEC: STDOUT/STDERR from command [ssh -t -t jen...@wasapp-t03.xxxxxxxxxxx uname -a] ...
Host key verification failed.
SSH: EXEC: completed after 203 ms
SSH: Disconnecting configuration [wasapp-t03] ...
ERROR: Exception when publishing, exception message [Exec exit status not zero. Status [255]]
Build step 'Send files or execute commands over SSH' changed build result to UNSTABLE
Finished: UNSTABLE

Few question(s):

Where are the Known_Hosts file stored on a Jenkins installation on windows?

Can you set an environment variable to defined the home directory from the SSH client?