title: IntelliJ cannot log in to GitHub
body: <p>For some reason, a new IntelliJ installation is unable to log in to GitHub. (The credentials are correct.)</p>
  
  <p>It happens both when I try to "share project on githu" and "checkout project from version control", select Git and then try to log in to GitHub.</p>
  
  <p>Here's the login prompt:</p>
  
  <pre><code>Server: github.com
  Login: &lt;my username&gt;
  Password: &lt;my password&gt;
  </code></pre>
  
  <p>And the error message:</p>
  
  <pre><code>Invalid authentication data. Can't create token:
  scopes - [repo, gist] - not IntelliJ Plugin_1 422
  Unprocessable Entity - Validation Failed
  [OauthAccess; description]already_exists: null
  </code></pre>
  
  <p>Now, this is on a freshly installed Windows 10 computer, with a freshly installed IntelliJ. So there are no old tokens or anything like that anywhere in the system. This is the first attempt to access GitHub from IntelliJ. Logging in via web works fine.</p>