title: install Exception device not found ANDROID
body: <p>After </p>
  
  <ul>
  <li>increasing the timeout period</li>
  <li>trying kill server and start server commands</li>
  <li>restarting avd</li>
  <li>recreating avd</li>
  <li>restarting the application</li>
  <li>restarting the system</li>
  </ul>
  
  <hr>
  
  <p>I'm still getting : </p>
  
  <pre><code>Failed to install DataAttach.apk on device 'emulator-5554': device not found
  com.android.ddmlib.InstallException: device not found
  Launch canceled!
  </code></pre>
  
  <p>What can be done in this case?<br>
  I'm running this app on Emulator (Android version 4.0)</p>
  
  <p><strong>Edit</strong><br>
  Apps doesn't have any issues as far as code is concerned. Still they are showing error about device not found exception.</p>