title: How to install KMDF Filter Driver from WDK 8.1 Toaster Sample Driver?
body: <p>I'm learning Windows driver development by examining the WDK 8.1 <a href="https://code.msdn.microsoft.com/windowshardware/Toaster-7d256224" rel="nofollow">Toaster Sample Driver</a>. I can build, install, debug, and communicate with the KMDF Bus, and KMDF Function Driver. The problem I have is installing the KMDF Filter Driver. I tried using devcon to install the filter driver, but it always fail. Any help would be appreciated.</p>
  
  <p><strong>Host system</strong>:</p>
  
  <ul>
  <li>Windows 8.1 Pro x64</li>
  <li>Build: Visual Studio 2013 Pro and WDK 8.1</li>
  <li>Debug: WinDbg (named pipe)</li>
  </ul>
  
  <p><strong>Target system (virtual machine)</strong>:</p>
  
  <ul>
  <li><p>Windows 8.1 Enterprise Evaluation</p></li>
  <li><p>Kernel debugging, and test signing, enabled</p></li>
  <li><p>Install: devcon</p></li>
  </ul>