title: github: No supported authentication methods available
body: <p>i use github and have successfully added and synched files on my laptop in the past. </p>
  
  <p>as of recent i started getting "<strong>PuTTY Fatal Error: Disconnected: No supported authentication methods available</strong>" after running:</p>
  
  <p>git pull origin master (or push)</p>
  
  <p>however</p>
  
  <p>ssh git@github.com returns the correct response:
  ERROR: Hi username! You've successfully authenticated, but GitHub does not provide shell access
  Connection to github.com closed.</p>
  
  <p>after digging around on github i found this morcel:</p>
  
  <p><strong>No supported authentication methods available</strong>
  You should be aware of the environment variable GIT_SSH, which is used by git to find your ssh-speaking client, if ssh doesn’t work for you. The git install may be using plink.exe (via GIT_SSH) to perform the authentication. If so, make sure you have pageant.exe running, and the key you created for github loaded into it. This provides the key to plink.exe; without it, the above error will occur.</p>
  
  <p>not sure what plink.exe or peagant.exe is.. and the fact that ssh git@github.com seems to authenticate correctly makes me wonder what the best solution here is.. i certainly don't want to overcomplicate my setup if not necessary. </p>