Hi, I don't use windows, but compare your auth_publickey to mine below. 
$ssh->auth_publickey($SSH_USER, './virt_pub', './virt_priv.ppk') or di
+e "pk connection error $!\n";

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# you need  permission to read the keys
$ssh2->auth_publickey('zentara',
                 '/home/zentara/.ssh/id_dsa.pub',
         '/home/zentara/.ssh/id_dsa',
          $pass );

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It's possible that your dot slash notation for specifying the key's path, may need a full path from root. You may not be running from the directory you think you are in.
I'm not really a human, but I play one on earth.
Old Perl Programmer Haiku ................... flash japh

In reply to Re^3: Net SSH2 auth_publickey not working in Windows by zentara
in thread Net SSH2 auth_publickey not working in Windows by karayan

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