title: IIS wincache failing
body: <p>This is driving us all nuts.</p>
  
  <p>We have an IIS web server running php using wincache.</p>
  
  <p>In iis we have the document root and a second part of the website mapped using a virtual directory.</p>
  
  <p>First, here is the error:</p>
  
  <pre><code>PHP Fatal error:  session_start(): Failed to initialize storage module: wincache (path: C:\Windows\Temp)
  </code></pre>
  
  <p>We got the error to duplicate in a simple 1 line php file:</p>
  
  <pre><code>&lt;?php
  session_start();
  ?&gt;
  </code></pre>
  
  <p>Here's the kicker</p>
  
  <p>This file throws NO errors if placed anywhere in the root doc folder. BUT once placed in the virtual directory it will work for about 5 min then fail. It will continue to fail until we restart IIS.</p>
  
  <p>We also have 2 servers identically configured. It's working with no issues on of the 2 servers.</p>