diff --git a/infrastructure/metadata/infrastructure/server/webtransport-h3.https.sub.any.js.ini b/infrastructure/metadata/infrastructure/server/webtransport-h3.https.sub.any.js.ini
index 7d3874e36c367b..f0041b0aa29c90 100644
--- a/infrastructure/metadata/infrastructure/server/webtransport-h3.https.sub.any.js.ini
+++ b/infrastructure/metadata/infrastructure/server/webtransport-h3.https.sub.any.js.ini
@@ -1,28 +1,30 @@
 [webtransport-h3.https.sub.any.html]
-  [WebTransport server should be running and should handle a bidirectional stream]
-    expected:
-      if product == "chrome": PASS
-      FAIL
-
-[webtransport-h3.https.sub.any.window.html]
+  disabled:
+    if product == "firefox": times out
   [WebTransport server should be running and should handle a bidirectional stream]
     expected:
       if product == "chrome": PASS
       FAIL
 
 [webtransport-h3.https.sub.any.worker.html]
+  disabled:
+    if product == "firefox": times out
   [WebTransport server should be running and should handle a bidirectional stream]
     expected:
       if product == "chrome": PASS
       FAIL
 
 [webtransport-h3.https.sub.any.sharedworker.html]
+  disabled:
+    if product == "firefox": times out
   [WebTransport server should be running and should handle a bidirectional stream]
     expected:
       if product == "chrome": PASS
       FAIL
 
 [webtransport-h3.https.sub.any.serviceworker.html]
+  disabled:
+    if product == "firefox": times out
   [WebTransport server should be running and should handle a bidirectional stream]
     expected:
       if product == "chrome": PASS