diff --git a/testing/web-platform/mozilla/meta/service-workers/service-worker/fetch-cors-xhr.https.html.ini b/testing/web-platform/mozilla/meta/service-workers/service-worker/fetch-cors-xhr.https.html.ini
deleted file mode 100644
index 908ece2a1085..000000000000
--- a/testing/web-platform/mozilla/meta/service-workers/service-worker/fetch-cors-xhr.https.html.ini
+++ /dev/null
@@ -1,6 +0,0 @@
-[fetch-cors-xhr.https.html]
-  type: testharness
-  expected: TIMEOUT
-  [Verify CORS XHR of fetch() in a Service Worker]
-    expected: TIMEOUT
-
diff --git a/testing/web-platform/mozilla/tests/service-workers/service-worker/fetch-cors-xhr.https.html b/testing/web-platform/mozilla/tests/service-workers/service-worker/fetch-cors-xhr.https.html
index 3562592469dc..3b1f1d6bc321 100644
--- a/testing/web-platform/mozilla/tests/service-workers/service-worker/fetch-cors-xhr.https.html
+++ b/testing/web-platform/mozilla/tests/service-workers/service-worker/fetch-cors-xhr.https.html
@@ -11,7 +11,7 @@ async_test(function(t) {
     var SCRIPT = 'resources/fetch-rewrite-worker.js';
     var host_info = get_host_info();
 
-    login(t)
+    login_https(t)
       .then(function() {
           return service_worker_unregister_and_register(t, SCRIPT, SCOPE);
         })
@@ -28,7 +28,7 @@ async_test(function(t) {
                   service_worker_unregister_and_done(t, SCOPE);
                 });
               frame.contentWindow.postMessage({},
-                                              host_info['HTTP_ORIGIN'],
+                                              host_info['HTTPS_ORIGIN'],
                                               [channel.port2]);
             });
         })
diff --git a/testing/web-platform/mozilla/tests/service-workers/service-worker/resources/fetch-cors-xhr-iframe.html b/testing/web-platform/mozilla/tests/service-workers/service-worker/resources/fetch-cors-xhr-iframe.html
index 7279b4855eb8..96b363a344e3 100644
--- a/testing/web-platform/mozilla/tests/service-workers/service-worker/resources/fetch-cors-xhr-iframe.html
+++ b/testing/web-platform/mozilla/tests/service-workers/service-worker/resources/fetch-cors-xhr-iframe.html
@@ -54,8 +54,8 @@ function create_serial_promise(test_cases) {
 
 window.addEventListener('message', function(evt) {
     var port = evt.ports[0];
-    var url = host_info['HTTP_ORIGIN'] + path;
-    var remote_url = host_info['HTTP_REMOTE_ORIGIN'] + path;
+    var url = host_info['HTTPS_ORIGIN'] + path;
+    var remote_url = host_info['HTTPS_REMOTE_ORIGIN'] + path;
     // If the 4th value of the item of TEST_CASES is true, the test case outputs
     // warning messages. So such tests must be executed in serial to match the
     // expected output text.
@@ -76,15 +76,15 @@ window.addEventListener('message', function(evt) {
       [remote_url + '?ignore', false, FAIL, true],  // Executed in serial.
       [remote_url + '?ignore', true, FAIL, true],  // Executed in serial.
       [
-        remote_url + '?ACAOrigin=' + host_info['HTTP_ORIGIN'] + '&ignore',
+        remote_url + '?ACAOrigin=' + host_info['HTTPS_ORIGIN'] + '&ignore',
         false, SUCCESS
       ],
       [
-        remote_url + '?ACAOrigin=' + host_info['HTTP_ORIGIN'] + '&ignore',
+        remote_url + '?ACAOrigin=' + host_info['HTTPS_ORIGIN'] + '&ignore',
         true, FAIL, true  // Executed in serial.
       ],
       [
-        remote_url + '?ACAOrigin=' + host_info['HTTP_ORIGIN'] +
+        remote_url + '?ACAOrigin=' + host_info['HTTPS_ORIGIN'] +
         '&ACACredentials=true&ignore',
         true, SUCCESS
       ],
@@ -94,15 +94,15 @@ window.addEventListener('message', function(evt) {
       [remote_url + '?Auth&ignore', false, FAIL, true],  // Executed in serial.
       [remote_url + '?Auth&ignore', true, FAIL, true],  // Executed in serial.
       [
-        remote_url + '?Auth&ACAOrigin=' + host_info['HTTP_ORIGIN'] + '&ignore',
+        remote_url + '?Auth&ACAOrigin=' + host_info['HTTPS_ORIGIN'] + '&ignore',
         false, 'STATUS401'
       ],
       [
-        remote_url + '?Auth&ACAOrigin=' + host_info['HTTP_ORIGIN'] + '&ignore',
+        remote_url + '?Auth&ACAOrigin=' + host_info['HTTPS_ORIGIN'] + '&ignore',
         true, FAIL, true  // Executed in serial.
       ],
       [
-        remote_url + '?Auth&ACAOrigin=' + host_info['HTTP_ORIGIN'] +
+        remote_url + '?Auth&ACAOrigin=' + host_info['HTTPS_ORIGIN'] +
         '&ACACredentials=true&ignore',
         true, SUCCESS
       ],
@@ -144,26 +144,41 @@ window.addEventListener('message', function(evt) {
       [
         url + '?mode=cors&url=' +
         encodeURIComponent(remote_url + '?ACAOrigin=' +
-                           host_info['HTTP_ORIGIN']),
+                           host_info['HTTPS_ORIGIN']),
         false, SUCCESS
       ],
       [
         url + '?mode=cors&url=' +
         encodeURIComponent(remote_url + '?ACAOrigin=' +
-                           host_info['HTTP_ORIGIN']),
+                           host_info['HTTPS_ORIGIN']),
+        true, FAIL
+      ],
+      [
+        url + '?mode=cors&url=' +
+        encodeURIComponent(remote_url + '?ACAOrigin=' +
+                           host_info['HTTPS_ORIGIN'] +
+                           '&ACACredentials=true'),
         true, SUCCESS
       ],
       [
         remote_url + '?mode=cors&url=' +
         encodeURIComponent(remote_url + '?ACAOrigin=' +
-                           host_info['HTTP_ORIGIN']),
+                           host_info['HTTPS_ORIGIN']),
         false, SUCCESS
       ],
       [
         remote_url +
         '?mode=cors&url=' +
         encodeURIComponent(remote_url + '?ACAOrigin=' +
-                           host_info['HTTP_ORIGIN']),
+                           host_info['HTTPS_ORIGIN']),
+        true, FAIL
+      ],
+      [
+        remote_url +
+        '?mode=cors&url=' +
+        encodeURIComponent(remote_url + '?ACAOrigin=' +
+                           host_info['HTTPS_ORIGIN'] +
+                           '&ACACredentials=true'),
         true, SUCCESS
       ]
     ];
diff --git a/testing/web-platform/mozilla/tests/service-workers/service-worker/resources/test-helpers.sub.js b/testing/web-platform/mozilla/tests/service-workers/service-worker/resources/test-helpers.sub.js
index f11b94ee023f..fae734fdaf35 100644
--- a/testing/web-platform/mozilla/tests/service-workers/service-worker/resources/test-helpers.sub.js
+++ b/testing/web-platform/mozilla/tests/service-workers/service-worker/resources/test-helpers.sub.js
@@ -166,8 +166,8 @@ function base_path() {
 function test_login(test, origin, username, password, cookie) {
   return new Promise(function(resolve, reject) {
       with_iframe(
-        origin +
-        '/service-worker/resources/fetch-access-control-login.html')
+        origin + base_path() +
+        'resources/fetch-access-control-login.html')
         .then(test.step_func(function(frame) {
             var channel = new MessageChannel();
             channel.port1.onmessage = test.step_func(function() {