diff --git a/auth/ldap/auth.php b/auth/ldap/auth.php
index 0739c59977c..000904c95bf 100644
--- a/auth/ldap/auth.php
+++ b/auth/ldap/auth.php
@@ -2057,7 +2057,21 @@ class auth_plugin_ldap extends auth_plugin_base {
         $entry = ldap_get_entries_moodle($ldapconn, $sr);
         $info = array_change_key_case($entry[0], CASE_LOWER);
         $maxpwdage = $info['maxpwdage'][0];
+        if ($sr = ldap_read($ldapconn, $user_dn, '(objectClass=*)', array('msDS-ResultantPSO', 'msDS-MaximumPasswordAge'))) {
+            if ($entry = ldap_get_entries_moodle($ldapconn, $sr)) {
+                $info = array_change_key_case($entry[0], CASE_LOWER);
+                $userpso = $info['msds-resultantpso'][0];
 
+                // If a PSO exists, FGPP is being utilized.
+                // Grab the new maxpwdage from the msDS-MaximumPasswordAge attribute of the PSO.
+                if (!empty($userpso)) {
+                    if ($entry = ldap_get_entries_moodle($ldapconn, $sr)) {
+                        $info = array_change_key_case($entry[0], CASE_LOWER);
+                        $maxpwdage = $info['msds-maximumpasswordage'][0];
+                    }
+                }
+            }
+        }
         // ----------------------------------------------------------------
         // MSDN says that "pwdLastSet contains the number of 100 nanosecond
         // intervals since January 1, 1601 (UTC), stored in a 64 bit integer".