title: Amazon EC2 instance "Permission denied (publickey)"
body: <p>All time I used this command to get access to my server via SSH</p>
  
  <pre><code>ssh -i "KeyPair.pem" ubuntu@52.26.255.0
  </code></pre>
  
  <p>Today I tried the same command and got this error message</p>
  
  <pre><code>Permission denied (publickey)
  </code></pre>
  
  <p>Using <code>-v</code> option I got this message</p>
  
  <pre><code>OpenSSH_6.6.1, OpenSSL 1.0.1m 19 Mar 2015
  debug1: Connecting to 52.26.255.0 [52.26.255.0] port 22.
  debug1: Connection established.
  debug1: identity file C:\\Users\\Jacob\\Google Drive\\KeyPair.pem type -1
  debug1: identity file C:\\Users\\Jacob\\Google Drive\\KeyPair.pem-cert type -1
  debug1: Enabling compatibility mode for protocol 2.0
  debug1: Local version string SSH-2.0-OpenSSH_6.6.1
  debug1: Remote protocol version 2.0, remote software version OpenSSH_6.6.1p1 Ubuntu-2ubuntu2
  debug1: match: OpenSSH_6.6.1p1 Ubuntu-2ubuntu2 pat OpenSSH_6.6.1* compat 0x04000000
  debug1: SSH2_MSG_KEXINIT sent
  debug1: SSH2_MSG_KEXINIT received
  debug1: kex: server-&gt;client aes128-ctr hmac-md5-etm@openssh.com none
  debug1: kex: client-&gt;server aes128-ctr hmac-md5-etm@openssh.com none
  debug1: sending SSH2_MSG_KEX_ECDH_INIT
  debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
  debug1: Server host key: ECDSA e3:51:6f:9a:ed:2f:a2:dd:50:9d:19:a2:0a:f4:88:10
  debug1: Host '52.26.255.0' is known and matches the ECDSA host key.
  debug1: Found key in /.ssh/known_hosts:2
  debug1: ssh_ecdsa_verify: signature correct
  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
  debug1: Next authentication method: publickey
  debug1: Trying private key: C:\\Users\\Jacob\\Google Drive\\KeyPair.pem
  debug1: key_parse_private2: missing begin marker
  debug1: read PEM private key done: type RSA
  debug1: Authentications that can continue: publickey
  debug1: No more authentication methods to try.
  Permission denied (publickey).
  </code></pre>
  
  <p>I did not modify my <code>KeyPair.pem</code> file ("Date modified" = 24-Sep-15)</p>
  
  <p><strong>A very important thing.</strong> At last successfully authorized time I executed the next command on the server:</p>
  
  <pre><code>home&gt; chmod -R 777 ubuntu/
  </code></pre>
  
  <p>Is it possible, that above command ruined my access rights to the server?</p>