title: Android Studio 2.2.2: All packages are not available for download
body: <p>I installed Android Studio 2.2.2 on my system. After when I openend one of the projects which have <code>compileSdkVersion 23</code>, got following error,</p>
  
  <blockquote>
  <pre><code>&gt;  Error:Failed to find target with hash string 'android-22' in:
  &gt; href="install.android.platform"&gt;Install missing platform(s) and sync
  &gt; project&lt;/a&gt;
  </code></pre>
  </blockquote>
  
  <p>I know this error means I need to download sdk packages but I'm not able to do so. Also in my SDK Manager I don't see all APIs to install</p>
  
  <p><a href="https://i.stack.imgur.com/vdHJk.png" rel="noreferrer"><img src="https://i.stack.imgur.com/vdHJk.png" alt="enter image description here"></a></p>