title: Vagrant stuck connection timeout retrying (Server refused our key)
body: <p>My vagrant was working perfectly fine last night. I've just turned the PC on, hit vagrant up, and this is what I get:</p>
  
  <pre><code>vagrant up                                                                     
  Bringing machine 'machine1' up with 'virtualbox' provider...                     
  ==&gt; machine1: Checking if box 'puphpet/ubuntu1404-x64' is up to date...          
  ==&gt; machine1: Clearing any previously set forwarded ports...                     
  ==&gt; machine1: Clearing any previously set network interfaces...                  
  ==&gt; machine1: Preparing network interfaces based on configuration...             
      machine1: Adapter 1: nat                                                     
      machine1: Adapter 2: hostonly                                                
  ==&gt; machine1: Forwarding ports...                                                
      machine1: 22 (guest) =&gt; 9180 (host) (adapter 1)                              
      machine1: 22 (guest) =&gt; 2222 (host) (adapter 1)                              
  ==&gt; machine1: Running 'pre-boot' VM customizations...                            
  ==&gt; machine1: Booting VM...                                                      
  ==&gt; machine1: Waiting for machine to boot. This may take a few minutes...        
  machine1: SSH address: 127.0.0.1:2222                                        
  machine1: SSH username: vagrant                                              
  machine1: SSH auth method: private key                                       
  machine1: Warning: Remote connection disconnect. Retrying...                 
  machine1: Warning: Remote connection disconnect. Retrying...                 
  machine1: Warning: Authentication failure. Retrying...                       
  machine1: Warning: Authentication failure. Retrying...                       
  machine1: Warning: Authentication failure. Retrying...                       
  machine1: Warning: Authentication failure. Retrying...                       
  machine1: Warning: Authentication failure. Retrying...                       
  machine1: Warning: Authentication failure. Retrying...                       
  machine1: Warning: Authentication failure. Retrying...                       
  machine1: Warning: Authentication failure. Retrying...                       
  </code></pre>
  
  <p>When I tried to connect I see this:</p>
  
  <pre><code>Using username "vagrant".
  Server refused our key
  vagrant@127.0.0.1's password:
  </code></pre>
  
  <p>But my key file didn't change. There is similar question <a href="https://stackoverflow.com/questions/22575261/vagrant-stuck-connection-timeout-retrying">Vagrant stuck connection timeout retrying</a> but there is other reason and it not helped me.</p>
  
  <p>There is ssh-config</p>
  
  <pre><code>&gt; vagrant ssh-config                                              
  Host machine1                                                     
  HostName 127.0.0.1                                              
  User vagrant                                                       
  Port 2222                                                       
  UserKnownHostsFile /dev/null                                    
  StrictHostKeyChecking no                                        
  PasswordAuthentication no                                       
  IdentityFile "C:/puphpet/puphpet/files/dot/ssh/id_rsa"          
  IdentityFile "C:/Users/alexk/.vagrant.d/insecure_private_key"   
  IdentitiesOnly yes                                              
  LogLevel FATAL                                                  
  </code></pre>