title: MSI Installer error 2203; how to force permissions on installer directory?
body: <p><em>[Cross-Posted on SuperUser.com as well because the question relates to permissions. Feel free to let me know where it best belongs.]</em></p>
  <p>Hi all,</p>
  <p>I'll try to bullet-point to keep it short:</p>
  <h3>Background / Issue</h3>
  <ul>
  <li>Trying to install ASP.NET MVC 3 RC on my Windows 7 machine.</li>
  <li>Uninstalled other versions of MVC (2 and 3 Beta 1).</li>
  <li>Ran the installer -- got a generic error, 2203.</li>
  <li>Log files said that it was a permissions error on C:\Windows\Installer.</li>
  <li>Checked C:\Windows\Installer -- sure enough, it's marked as read-only.</li>
  <li>I un-checked &quot;Read-Only&quot; in the folder properties and applied. It appears to open the dialog and apply to all files.</li>
  <li>However, when clicking properties again, the read-only box is backed to checked.</li>
  <li>Checked the security tab of the folder -- both system and the Administrators group have full access.</li>
  <li>I checked ownership -- the Administrators group is listed as an owner.</li>
  <li>Verified that I'm in the system as an Administrator (in fact, the only account in the Administrators group besides Administrator).</li>
  </ul>
  <p>So, what gives? Thanks in advance for any help you can provide!</p>