Solution to AWS via Putty

Error:  Disconnected: No supported authentication methods available (server sent: publickey)

http://wiki.bitnami.org/cloud/how_to_connect_to_your_amazon_instance

To connect to instance’s they provide the username is different instead of ec2-user you need to use bitnami.

In other words use the user of “bitnami” and not “ubuntu”

In the instructions is says to use:  ubuntu@ec2-xx-xxx-xxx-3.compute-1.amazonaws.com