Index: library/Zend/Controller/Request/Http.php
===================================================================
--- library/Zend/Controller/Request/Http.php	(revision 18233)
+++ library/Zend/Controller/Request/Http.php	(working copy)
@@ -392,6 +392,12 @@
         if ($requestUri === null) {
             if (isset($_SERVER['HTTP_X_REWRITE_URL'])) { // check this first so IIS will catch
                 $requestUri = $_SERVER['HTTP_X_REWRITE_URL'];
+            } elseif (isset($_SERVER['IIS_WasUrlRewritten'])
+                && $_SERVER['IIS_WasUrlRewritten'] == '1'
+                && isset($_SERVER['UNENCODED_URL'])
+                && $_SERVER['UNENCODED_URL'] != ''
+                ) {
+                $requestUri = $_SERVER['UNENCODED_URL'];
             } elseif (isset($_SERVER['REQUEST_URI'])) {
                 $requestUri = $_SERVER['REQUEST_URI'];
                 // Http proxy reqs setup request uri with scheme and host [and port] + the url path, only use url path