diff --git a/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateWindowOrWorkerInterfaces.cpp b/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateWindowOrWorkerInterfaces.cpp
index f0707e1545..b831b2a458 100644
--- a/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateWindowOrWorkerInterfaces.cpp
+++ b/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateWindowOrWorkerInterfaces.cpp
@@ -53,6 +53,7 @@ static ErrorOr<void> generate_exposed_interface_implementation(StringView class_
     generator.set("global_object_snake_name", String(class_name).to_snakecase());
 
     generator.append(R"~~~(
+#include <LibJS/Heap/DeferGC.h>
 #include <LibJS/Runtime/Object.h>
 #include <LibWeb/Bindings/Intrinsics.h>
 #include <LibWeb/Bindings/@global_object_name@ExposedInterfaces.h>
@@ -85,6 +86,11 @@ void add_@global_object_snake_name@_exposed_interfaces(JS::Object& global, JS::R
 {
     auto& vm = global.vm();
     // FIXME: Should we use vm.current_realm() here?
+
+    // NOTE: Temporarily disable garbage collection to prevent GC from triggering while a not-fully-constructed
+    //       prototype or constructor object has been allocated. This is a hack.
+    // FIXME: Find a nicer way to solve this.
+    JS::DeferGC defer_gc(vm.heap());
 )~~~");
 
     auto add_interface = [](SourceGenerator& gen, StringView name, StringView prototype_class, StringView constructor_class) {
diff --git a/Userland/Libraries/LibWeb/Bindings/MainThreadVM.cpp b/Userland/Libraries/LibWeb/Bindings/MainThreadVM.cpp
index 3be2ff74d8..a1fd290993 100644
--- a/Userland/Libraries/LibWeb/Bindings/MainThreadVM.cpp
+++ b/Userland/Libraries/LibWeb/Bindings/MainThreadVM.cpp
@@ -6,6 +6,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <LibJS/Heap/DeferGC.h>
 #include <LibJS/Module.h>
 #include <LibJS/Runtime/Array.h>
 #include <LibJS/Runtime/Environment.h>
@@ -16,6 +17,7 @@
 #include <LibWeb/Bindings/Intrinsics.h>
 #include <LibWeb/Bindings/LocationObject.h>
 #include <LibWeb/Bindings/MainThreadVM.h>
+#include <LibWeb/Bindings/WindowExposedInterfaces.h>
 #include <LibWeb/DOM/Document.h>
 #include <LibWeb/HTML/PromiseRejectionEvent.h>
 #include <LibWeb/HTML/Scripting/ClassicScript.h>
@@ -374,6 +376,15 @@ JS::VM& main_thread_vm()
         auto host_defined = make<HostDefined>(nullptr, *intrinsics);
         root_realm->set_host_defined(move(host_defined));
 
+        // NOTE: We make sure the internal realm has all the Window intrinsics initialized.
+        //       The DeferGC is a hack to avoid nested GC allocations due to lazy ensure_web_prototype()
+        //       and ensure_web_constructor() invocations.
+        // FIXME: Find a nicer way to do this.
+        JS::DeferGC defer_gc(root_realm->heap());
+        auto* object = JS::Object::create(*root_realm, nullptr);
+        root_realm->set_global_object(object, object);
+        add_window_exposed_interfaces(*object, *root_realm);
+
         vm->push_execution_context(*custom_data.root_execution_context);
     }
     return *vm;