diff --git a/mod/quiz/classes/notification_helper.php b/mod/quiz/classes/notification_helper.php
index 33ad9910ef3..b977ddb2a61 100644
--- a/mod/quiz/classes/notification_helper.php
+++ b/mod/quiz/classes/notification_helper.php
@@ -79,7 +79,7 @@ class notification_helper {
         $users = get_enrolled_users(
             context: \context_module::instance($quizobj->get_cm()->id),
             withcapability: 'mod/quiz:attempt',
-            userfields: 'u.id, u.firstname',
+            userfields: 'u.id, u.firstname, u.suspended, u.auth',
         );
 
         // Filter a list of users who meet the availability conditions.
@@ -90,6 +90,10 @@ class notification_helper {
         $overrides = $quizobj->get_override_manager()->get_all_overrides();
 
         foreach ($users as $key => $user) {
+            if ($user->suspended || ($user->auth == 'nologin')) {
+                unset($users[$key]);
+                continue;
+            }
             // Time open and time close dates can be user specific with an override.
             // We begin by assuming it is the same as recorded in the quiz.
             $user->timeopen = $quiz->timeopen;
diff --git a/mod/quiz/tests/notification_helper_test.php b/mod/quiz/tests/notification_helper_test.php
index 1e0e8051b6a..77aa80ea5e4 100644
--- a/mod/quiz/tests/notification_helper_test.php
+++ b/mod/quiz/tests/notification_helper_test.php
@@ -91,11 +91,13 @@ final class notification_helper_test extends \advanced_testcase {
         $user3 = $generator->create_user();
         $user4 = $generator->create_user();
         $user5 = $generator->create_user();
+        $user6 = $generator->create_user(['suspended' => 1]);
         $generator->enrol_user($user1->id, $course->id, 'student');
         $generator->enrol_user($user2->id, $course->id, 'student');
         $generator->enrol_user($user3->id, $course->id, 'student');
         $generator->enrol_user($user4->id, $course->id, 'student');
         $generator->enrol_user($user5->id, $course->id, 'teacher');
+        $generator->enrol_user($user6->id, $course->id, 'student');
 
         /** @var \mod_quiz_generator $quizgenerator */
         $quizgenerator = $generator->get_plugin_generator('mod_quiz');
@@ -150,6 +152,9 @@ final class notification_helper_test extends \advanced_testcase {
         // User5 should not be in the returned users because they are a teacher.
         $this->assertArrayNotHasKey($user5->id, $users);
 
+        // User6 should not be in the returned users because it is suspended.
+        $this->assertArrayNotHasKey($user6->id, $users);
+
         // Let's add some availability conditions.
         $availability =
         [