diff --git a/main/inc/lib/urlmanager.lib.php b/main/inc/lib/urlmanager.lib.php
index e94a67afc1..7ac88a43ca 100755
--- a/main/inc/lib/urlmanager.lib.php
+++ b/main/inc/lib/urlmanager.lib.php
@@ -757,6 +757,26 @@ class UrlManager
         return $result;
     }
 
+    /**
+     * Deletes user from all portals
+     * @author Julio Montoya
+     * @param int user id
+     *
+     * @return boolean true if success
+     * */
+    public static function deleteUserFromAllUrls($userId)
+    {
+        $table_url_rel_user = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_USER);
+        $result = true;
+        if (!empty($userId)) {
+            $sql= "DELETE FROM $table_url_rel_user
+                   WHERE user_id = ".intval($userId);
+            Database::query($sql);
+        }
+
+        return $result;
+    }
+
     /**
     * Deletes an url and course relationship
     * @author Julio Montoya
diff --git a/main/inc/lib/usermanager.lib.php b/main/inc/lib/usermanager.lib.php
index 964aeeb4a5..31600933bb 100755
--- a/main/inc/lib/usermanager.lib.php
+++ b/main/inc/lib/usermanager.lib.php
@@ -475,12 +475,12 @@ class UserManager
      */
     public static function can_delete_user($user_id)
     {
-        global $_configuration;
-        if (isset($_configuration['deny_delete_users']) &&
-            $_configuration['deny_delete_users'] == true
-        ) {
+        $deny = api_get_configuration_value('deny_delete_users');
+
+        if ($deny) {
             return false;
         }
+
         $table_course_user = Database :: get_main_table(TABLE_MAIN_COURSE_USER);
         if ($user_id != strval(intval($user_id))) {
             return false;
@@ -493,12 +493,14 @@ class UserManager
         $res = Database::query($sql);
         while ($course = Database::fetch_object($res)) {
             $sql = "SELECT id FROM $table_course_user
-                    WHERE status=1 AND c_id = " . Database::escape_string($course->c_id);
+                    WHERE status=1 AND c_id = " . intval($course->c_id);
             $res2 = Database::query($sql);
             if (Database::num_rows($res2) == 1) {
+
                 return false;
             }
         }
+
         return true;
     }
 
@@ -612,8 +614,7 @@ class UserManager
         $extraFieldValue = new ExtraFieldValue('user');
         $extraFieldValue->deleteValuesByItem($user_id);
 
-        $url_id = api_get_current_access_url_id();
-        UrlManager::delete_url_rel_user($user_id, $url_id);
+        UrlManager::deleteUserFromAllUrls($user_id);
 
         if (api_get_setting('allow_social_tool') == 'true') {
             $userGroup = new UserGroup();
@@ -648,12 +649,13 @@ class UserManager
                 WHERE lastedit_user_id = '".$user_id."'";
         Database::query($sql);
 
+
+
+
         // Delete user from database
         $sql = "DELETE FROM $table_user WHERE id = '".$user_id."'";
         Database::query($sql);
 
-
-
         // Add event to system log
         $user_id_manager = api_get_user_id();