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No supported authentication methods available (server sent: publickey,gssapi-keyex,gssapi-with-mic)I have generated a key pair in AWS, and saved the .pem file. I used PuttyGen to create a private key .ppk file and loaded that when trying to ssh into the server. I have tried the suggested username t128 as well as admin, root, centos, and ec2-user. All return the same error. I created a new Centos Linux instance and using the same key pair/.ppk file was able to ssh into that instance with no problems(username=centos). Has anyone encountered a similar issue. Is t128 the correct username?ThanksKen