If cookie is not set. Set it again otherwiser the site will be blocked

See BT#8883

index.php

@@ -14,13 +14,13 @@ $language_file = array('courses', 'index', 'userInfo');
 // Maybe we should change this into an api function? an example: CourseManager::unset();
 $cidReset = true;
 
-// Set cookie for check if client browser are cookies enabled
-setcookie('TestCookie', 'cookies_yes', time()+3600*24*31*12);
-
 require_once 'main/inc/global.inc.php';
 require_once api_get_path(LIBRARY_PATH).'userportal.lib.php';
 require_once 'main/chat/chat_functions.lib.php';
 
+// Set cookie for check if client browser are cookies enabled
+setcookie('TestCookie', 'cookies_yes', time()+3600*24*31*12);
+
 // The section (for the tabs).
 $this_section = SECTION_CAMPUS;
 

main/inc/lib/main_api.lib.php

@@ -3240,6 +3240,8 @@ function api_not_allowed($print_headers = false, $message = null)
             get_lang('BackTo').' '.get_lang('CampusHomepage').'</a><br />', 'error',
             false
         );
+        // Set cookie again.
+        setcookie('TestCookie', 'cookies_yes', time()+3600*24*31*12);
     } else {
         // The session is over and we were not in a course,
         // or we try to get directly to a private course without being logged