title: Set adb vendor keys
body: <p>EDIT: I figured out the problem, i think. ADB found out I wasn't on the latest updates (at&amp;t released a stagefright udpate and i didnt know) so ADB didn't let me debug. Everything is fine now.</p>
  
  <p>I have been debugging my app on an AT&amp;T HTC One M8 for about a month. Suddenly today when I plugged in my phone, I didn't get the authorization popup. After an hour of troubleshooting, I found the problem, but not a solution.</p>
  
  <p>This is the error i get in Android Studio 1.3.1:</p>
  
  <blockquote>
    <p>device unauthorized.<br/>
    This adbd's <code>$ADB_VENDOR_KEYS</code> is not set; try 'adb kill-server' if that seems wrong.<br/>
    Otherwise check for a confirmation dialog on your device.</p>
  </blockquote>
  
  <p>I googled <code>$ADB_VENDOR_KEYS</code> but to no avail.</p>
  
  <p>Information:</p>
  
  <ul>
  <li>Phone: AT&amp;T HTC One M8 running 5.0.1 (API 21)</li>
  <li>Android Studio version 1.3.1 build 141.2135290</li>
  <li>JDK Version: 1.8.0_60</li>
  </ul>
  
  <p>How can I get the popup again? I need to debug my app</p>