diff --git a/public/admin/tool/mobile/classes/api.php b/public/admin/tool/mobile/classes/api.php
index 801f76fe157..5f380d67251 100644
--- a/public/admin/tool/mobile/classes/api.php
+++ b/public/admin/tool/mobile/classes/api.php
@@ -379,6 +379,7 @@ class api {
         }
 
         if (empty($section) || $section === 'navigation') {
+            $settings->enablemyhome = $CFG->enablemyhome ?? 1;
             $settings->enabledashboard = $CFG->enabledashboard;
         }
 
diff --git a/public/admin/tool/mobile/tests/externallib_test.php b/public/admin/tool/mobile/tests/externallib_test.php
index 483aeb23671..4fa10388b05 100644
--- a/public/admin/tool/mobile/tests/externallib_test.php
+++ b/public/admin/tool/mobile/tests/externallib_test.php
@@ -242,6 +242,7 @@ final class externallib_test extends \core_external\tests\externallib_testcase {
         $expected[] = ['name' => 'coursegraceperiodafter', 'value' => $CFG->coursegraceperiodafter];
         $expected[] = ['name' => 'coursegraceperiodbefore', 'value' => $CFG->coursegraceperiodbefore];
 
+        $expected[] = ['name' => 'enablemyhome', 'value' => $CFG->enablemyhome ?? 1];
         $expected[] = ['name' => 'enabledashboard', 'value' => $CFG->enabledashboard];
         $expected[] = ['name' => 'customusermenuitems', 'value' => $CFG->customusermenuitems];
         $expected[] = ['name' => 'timezone', 'value' => $CFG->timezone];
diff --git a/public/course/externallib.php b/public/course/externallib.php
index d027ff41de1..46d445f3bfe 100644
--- a/public/course/externallib.php
+++ b/public/course/externallib.php
@@ -144,6 +144,11 @@ class core_course_external extends external_api {
         //retrieve the course
         $course = $DB->get_record('course', array('id' => $params['courseid']), '*', MUST_EXIST);
 
+        // Accessing the site home via the web service is not allowed when it is disabled.
+        if ($course->id == SITEID && empty($CFG->enablemyhome)) {
+            throw new moodle_exception('error:sitehomeisdisabled', 'course');
+        }
+
         // now security checks
         $context = context_course::instance($course->id, IGNORE_MISSING);
         try {
diff --git a/public/lang/en/course.php b/public/lang/en/course.php
index a9b058fe404..4b5c2a9b872 100644
--- a/public/lang/en/course.php
+++ b/public/lang/en/course.php
@@ -95,6 +95,7 @@ $string['downloadcontent_help'] = 'Should this activity or resource be included
 
 The setting has no effect on mobile app content download for offline usage.';
 $string['enabledownloadcoursecontent'] = 'Enable download course content';
+$string['error:sitehomeisdisabled'] = 'The Site Home has been disabled by an administrator.';
 $string['errorendbeforestart'] = 'The end date ({$a}) is before the course start date.';
 $string['favourite'] = 'Starred course';
 $string['filterbothactive'] = 'First ({$a->first}) Last ({$a->last})';