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ssh failed Permission denied (publickey,gssapi-keyex,gssapi-with-mic).

Posted on July 1, 2016

Note from DigitalOcean Community team: The user @intalix has provided a popular answer to a very similar question on setting up SSH keys here: https://www.digitalocean.com/community/questions/error-permission-denied-publickey-when-i-try-to-ssh?answer=44730

ssh -v  root@xx.xx.xx.xxx
OpenSSH_6.9p1, LibreSSL 2.1.7
debug1: Reading configuration data /Users/frank_szn/.ssh/config
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 21: Applying options for *
debug1: /etc/ssh/ssh_config line 56: Applying options for *
debug1: Connecting to 45.55.20.113 [45.55.20.113] port 22.
debug1: Connection established.
debug1: identity file /Users/frank_szn/.ssh/id_rsa type 1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/frank_szn/.ssh/id_rsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/frank_szn/.ssh/id_dsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/frank_szn/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/frank_szn/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/frank_szn/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/frank_szn/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/frank_szn/.ssh/id_ed25519-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_6.9
debug1: Remote protocol version 2.0, remote software version OpenSSH_5.3
debug1: match: OpenSSH_5.3 pat OpenSSH_5* compat 0x0c000000
debug1: Authenticating to 45.55.20.113:22 as 'root'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-ctr umac-64@openssh.com none
debug1: kex: client->server aes128-ctr umac-64@openssh.com none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<3072<8192) sent
debug1: got SSH2_MSG_KEX_DH_GEX_GROUP
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: got SSH2_MSG_KEX_DH_GEX_REPLY
debug1: Server host key: ssh-rsa SHA256:xiB0VWociJ19y8/fqsxGcn0OJJeMe8J5TUhii5y05Ms
debug1: Host '45.55.20.113' is known and matches the RSA host key.
debug1: Found key in /Users/frank_szn/.ssh/known_hosts:3
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: Roaming not allowed by server
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic
debug1: Next authentication method: publickey
debug1: Offering RSA public key: /Users/frank_szn/.ssh/id_rsa
debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic
debug1: Trying private key: /Users/frank_szn/.ssh/id_dsa
debug1: Trying private key: /Users/frank_szn/.ssh/id_ecdsa
debug1: Trying private key: /Users/frank_szn/.ssh/id_ed25519
debug1: No more authentication methods to try.
Permission denied (publickey,gssapi-keyex,gssapi-with-mic).


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facing the same issue. Using bash ubuntu for windows and I cannot login to the server. If i use putty, I get right in

Just adding my two cents. I was trying to ssh by using my ppk and pem file format keys. I was able to login by using my key in the original format id_rsa

ssh -i id_rsa ec2-user@192.168.0.2

Follow these steps:

  1. Just check whether your username for the host is correct
  2. set 400 permission to your key file

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