title: System.DllNotFoundException: 'Unable to load DLL 'libzkfp.dll': The specified module could not be found. (Exception from HRESULT: 0x8007007E)'
body: <p>I installed ZKtecoFingerprint SDK and I'm trying to run the demo of this SDK but I got this exception!</p>
  <pre><code>System.DllNotFoundException: 'Unable to load DLL 'libzkfp.dll': The specified module could not be found. (Exception from HRESULT: 0x8007007E)'
  </code></pre>
  <p><a href="https://i.stack.imgur.com/51zGo.png" rel="nofollow noreferrer">Exception</a></p>
  <p><a href="https://i.stack.imgur.com/Azhaj.png" rel="nofollow noreferrer">References</a></p>
  <p>How can I use the Zketco demo application??</p>
  <p><strong>Code :</strong></p>
  <pre><code>  private void bnInit_Click(object sender, EventArgs e)
      {
          cmbIdx.Items.Clear();
          int ret = zkfperrdef.ZKFP_ERR_OK;
          if ((ret = zkfp2.Init()) == zkfperrdef.ZKFP_ERR_OK)
          {
              int nCount = zkfp2.GetDeviceCount();
              if (nCount &gt; 0)
              {
                  for (int i = 0; i &lt; nCount; i++)
                  {
                      cmbIdx.Items.Add(i.ToString());
                  }
                  cmbIdx.SelectedIndex = 0;
                  bnInit.Enabled = false;
                  bnFree.Enabled = true;
                  bnOpen.Enabled = true;
              }
              else
              {
                  zkfp2.Terminate();
                  MessageBox.Show(&quot;No device connected!&quot;);
              }
          }
          else
          {
              MessageBox.Show(&quot;Initialize fail, ret=&quot; + ret + &quot; !&quot;);
          }
      }
  </code></pre>
  <p><a href="https://i.stack.imgur.com/mShy6.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/mShy6.png" alt="Configuration Target x86" /></a></p>