Can't login after enabling IIRF on IIS6 for Permalinks

We are running IIS6 and IIRF 2.1

Here is a link to what I followed to get the permalinks working. https://saisat.wordpress.com/2010/04/29/using-iirf-url-rewriting-on-iis6-with-wordpress/

The permalinks do work as they should, only issue is that I am now unable to login. It does not even come back and say incorrect password. I disabled IIRF and restarted and we are able to log in. Here is what I have for the iirf.ini if that helps.

RewriteCond %{HTTP_HOST} ^(dderr\.clients\.wccit\.com).*$ [I]
RedirectRule ^/(.*)$ https://www.dderr.clients.wccit.com/$1 [I]

RedirectRule ^/thinkhaus.com/index\.php/(.*)$ /thinkhaus.com/$1 [I]
RewriteRule ^/thinkhaus.com/(?!index\.php|wp-|xmlrpc)(.*)$ /thinkhaus.com/index.php/$1 [I,L]