title: Chrome Extension: Failed to start native messaging host
body: <p>I'm developing a Chrome extension using Native Messaging technology.<br>
  The extension works but on some PC I get an error: </p>
  
  <blockquote>
    <p>Failed to start native messaging host</p>
  </blockquote>
  
  <p>Some (not all) of those PCs are running Windows 7 and Windows XP:</p>
  
  <ul>
  <li>Windows 7: the PC has a lock icon on the user folder <code>C:\Users</code>. I can fix it as per the <a href="http://www.howtogeek.com/howto/17117/remove-the-lock-icon-from-a-folder-in-windows-7/" rel="nofollow">tutorial</a> and restart the PC to make my extension work.</li>
  <li>Windows XP: I have not found any solution for this error.</li>
  </ul>
  
  <p>According to <a href="https://developer.chrome.com/extensions/nativeMessaging#native-messaging-debugging" rel="nofollow">nativeMessaging documentation</a> I think the problem is related to filesystem security permissions of <code>chrome.exe</code> file and native host application file.</p>
  
  <p>I've asked many times about this problem on other groups and searched on google but haven't found a solution.</p>
  
  <ol>
  <li>How to check the permissions of <code>chrome.exe</code> file or native host application file are okay?</li>
  <li>Any other way to solve this problem?</li>
  </ol>