--- a/dom/xhr/XMLHttpRequestMainThread.cpp
+++ b/dom/xhr/XMLHttpRequestMainThread.cpp
@@ -1133,16 +1133,20 @@ XMLHttpRequestMainThread::GetAllResponse
   aResponseHeaders.Truncate();
 
   // If the state is UNSENT or OPENED,
   // return the empty string and terminate these steps.
   if (mState == State::unsent || mState == State::opened) {
     return;
   }
 
+  if (mErrorLoad) {
+    return;
+  }
+
   if (nsCOMPtr<nsIHttpChannel> httpChannel = GetCurrentHttpChannel()) {
     RefPtr<nsHeaderVisitor> visitor =
       new nsHeaderVisitor(*this, WrapNotNull(httpChannel));
     if (NS_SUCCEEDED(httpChannel->VisitResponseHeaders(visitor))) {
       aResponseHeaders = visitor->Headers();
     }
     return;
   }

deleted file mode 100644
--- a/testing/web-platform/meta/XMLHttpRequest/xmlhttprequest-network-error.htm.ini
+++ /dev/null
@@ -1,5 +0,0 @@
-[xmlhttprequest-network-error.htm]
-  type: testharness
-  [XMLHttpRequest: members during network errors]
-    expected: FAIL
-