diff --git a/src/HotChocolate/AspNetCore/src/AspNetCore/Extensions/HotChocolateAspNetCoreServiceCollectionExtensions.Http.cs b/src/HotChocolate/AspNetCore/src/AspNetCore/Extensions/HotChocolateAspNetCoreServiceCollectionExtensions.Http.cs
index 74c2a410d39..a25b3e94caa 100644
--- a/src/HotChocolate/AspNetCore/src/AspNetCore/Extensions/HotChocolateAspNetCoreServiceCollectionExtensions.Http.cs
+++ b/src/HotChocolate/AspNetCore/src/AspNetCore/Extensions/HotChocolateAspNetCoreServiceCollectionExtensions.Http.cs
@@ -31,8 +31,7 @@ public static IRequestExecutorBuilder AddHttpRequestInterceptor<T>(
 
         return builder.ConfigureSchemaServices(s => s
             .RemoveAll<IHttpRequestInterceptor>()
-            .AddSingleton<IHttpRequestInterceptor, T>(sp =>
-                ActivatorUtilities.GetServiceOrCreateInstance<T>(sp.GetCombinedServices())));
+            .AddSingleton<IHttpRequestInterceptor, T>());
     }
 
     /// <summary>
@@ -60,7 +59,7 @@ public static IRequestExecutorBuilder AddHttpRequestInterceptor<T>(
 
         return builder.ConfigureSchemaServices(s => s
             .RemoveAll<IHttpRequestInterceptor>()
-            .AddSingleton<IHttpRequestInterceptor, T>(sp => factory(sp.GetCombinedServices())));
+            .AddSingleton<IHttpRequestInterceptor, T>(factory));
     }
 
     /// <summary>
diff --git a/src/HotChocolate/AspNetCore/src/AspNetCore/Extensions/HotChocolateAspNetCoreServiceCollectionExtensions.Subscriptions.cs b/src/HotChocolate/AspNetCore/src/AspNetCore/Extensions/HotChocolateAspNetCoreServiceCollectionExtensions.Subscriptions.cs
index cbacdb1360e..8b63e85b247 100644
--- a/src/HotChocolate/AspNetCore/src/AspNetCore/Extensions/HotChocolateAspNetCoreServiceCollectionExtensions.Subscriptions.cs
+++ b/src/HotChocolate/AspNetCore/src/AspNetCore/Extensions/HotChocolateAspNetCoreServiceCollectionExtensions.Subscriptions.cs
@@ -28,8 +28,7 @@ public static IRequestExecutorBuilder AddSocketSessionInterceptor<T>(
         where T : class, ISocketSessionInterceptor =>
         builder.ConfigureSchemaServices(s => s
             .RemoveAll<ISocketSessionInterceptor>()
-            .AddSingleton<ISocketSessionInterceptor, T>(
-                sp => ActivatorUtilities.GetServiceOrCreateInstance<T>(sp.GetCombinedServices())));
+            .AddSingleton<ISocketSessionInterceptor, T>());
 
     /// <summary>
     /// Adds an interceptor for GraphQL socket sessions to the GraphQL configuration.
@@ -52,7 +51,7 @@ public static IRequestExecutorBuilder AddSocketSessionInterceptor<T>(
         where T : class, ISocketSessionInterceptor =>
         builder.ConfigureSchemaServices(s => s
             .RemoveAll<ISocketSessionInterceptor>()
-            .AddSingleton<ISocketSessionInterceptor, T>(sp => factory(sp.GetCombinedServices())));
+            .AddSingleton<ISocketSessionInterceptor, T>(factory));
 
     private static IRequestExecutorBuilder AddSubscriptionServices(
         this IRequestExecutorBuilder builder)
diff --git a/src/HotChocolate/Core/src/Execution/DependencyInjection/RequestExecutorBuilderExtensions.ErrorFilter.cs b/src/HotChocolate/Core/src/Execution/DependencyInjection/RequestExecutorBuilderExtensions.ErrorFilter.cs
index 884e22ba0fc..b447809afa6 100644
--- a/src/HotChocolate/Core/src/Execution/DependencyInjection/RequestExecutorBuilderExtensions.ErrorFilter.cs
+++ b/src/HotChocolate/Core/src/Execution/DependencyInjection/RequestExecutorBuilderExtensions.ErrorFilter.cs
@@ -30,8 +30,7 @@ public static IRequestExecutorBuilder AddErrorFilter<T>(
         ArgumentNullException.ThrowIfNull(factory);
 
         return builder.ConfigureSchemaServices(
-            s => s.AddSingleton<IErrorFilter, T>(
-                sp => factory(sp.GetCombinedServices())));
+            s => s.AddSingleton<IErrorFilter, T>(factory));
     }
 
     public static IRequestExecutorBuilder AddErrorFilter<T>(
@@ -42,8 +41,7 @@ public static IRequestExecutorBuilder AddErrorFilter<T>(
 
         builder.Services.TryAddSingleton<T>();
         return builder.ConfigureSchemaServices(
-            s => s.AddSingleton<IErrorFilter, T>(
-                sp => sp.GetRootServiceProvider().GetRequiredService<T>()));
+            s => s.AddSingleton<IErrorFilter, T>());
     }
 
     public static IServiceCollection AddErrorFilter(
diff --git a/src/HotChocolate/Core/src/Execution/DependencyInjection/RequestExecutorBuilderExtensions.Instrumentation.cs b/src/HotChocolate/Core/src/Execution/DependencyInjection/RequestExecutorBuilderExtensions.Instrumentation.cs
index b49f7dad36c..0d05e7ee04b 100644
--- a/src/HotChocolate/Core/src/Execution/DependencyInjection/RequestExecutorBuilderExtensions.Instrumentation.cs
+++ b/src/HotChocolate/Core/src/Execution/DependencyInjection/RequestExecutorBuilderExtensions.Instrumentation.cs
@@ -19,13 +19,14 @@ public static IRequestExecutorBuilder AddDiagnosticEventListener<T>(
         {
             builder.Services.TryAddSingleton<T>();
             builder.ConfigureSchemaServices(
-                s => s.AddSingleton(
-                    sp => (IExecutionDiagnosticEventListener)sp.GetRootServiceProvider().GetRequiredService<T>()));
+                static s => s.AddSingleton(
+                    static sp => (IExecutionDiagnosticEventListener)sp.GetRequiredService<T>()));
         }
         else if (typeof(IDataLoaderDiagnosticEventListener).IsAssignableFrom(typeof(T)))
         {
             builder.Services.TryAddSingleton<T>();
-            builder.Services.AddSingleton(s => (IDataLoaderDiagnosticEventListener)s.GetRequiredService<T>());
+            builder.Services.AddSingleton(
+                static s => (IDataLoaderDiagnosticEventListener)s.GetRequiredService<T>());
         }
         else if (typeof(T).IsDefined(typeof(DiagnosticEventSourceAttribute), true))
         {
@@ -35,7 +36,7 @@ public static IRequestExecutorBuilder AddDiagnosticEventListener<T>(
             {
                 var attribute = typeof(T).GetCustomAttributes(typeof(DiagnosticEventSourceAttribute), true).First();
                 var listener = ((DiagnosticEventSourceAttribute)attribute).Listener;
-                s.AddSingleton(listener, sp => sp.GetRootServiceProvider().GetRequiredService<T>());
+                s.AddSingleton(listener, sp => sp.GetRequiredService<T>());
             });
         }
         else
@@ -48,23 +49,21 @@ public static IRequestExecutorBuilder AddDiagnosticEventListener<T>(
 
     public static IRequestExecutorBuilder AddDiagnosticEventListener<T>(
         this IRequestExecutorBuilder builder,
-        Func<IServiceProvider, T> diagnosticEventListener)
+        Func<IServiceProvider, T> factory)
         where T : class
     {
         ArgumentNullException.ThrowIfNull(builder);
-        ArgumentNullException.ThrowIfNull(diagnosticEventListener);
+        ArgumentNullException.ThrowIfNull(factory);
 
         if (typeof(IExecutionDiagnosticEventListener).IsAssignableFrom(typeof(T)))
         {
             builder.ConfigureSchemaServices(
-                s => s.AddSingleton(
-                    sp => (IExecutionDiagnosticEventListener)diagnosticEventListener(
-                        sp.GetCombinedServices())));
+                s => s.AddSingleton(sp => (IExecutionDiagnosticEventListener)factory(sp)));
         }
         else if (typeof(IDataLoaderDiagnosticEventListener).IsAssignableFrom(typeof(T)))
         {
             builder.Services.AddSingleton(
-                s => (IDataLoaderDiagnosticEventListener)diagnosticEventListener(s));
+                s => (IDataLoaderDiagnosticEventListener)factory(s));
         }
         else if (typeof(T).IsDefined(typeof(DiagnosticEventSourceAttribute), true))
         {
@@ -78,13 +77,13 @@ public static IRequestExecutorBuilder AddDiagnosticEventListener<T>(
                 builder.ConfigureSchemaServices(s =>
                 {
                     var listener = attribute.Listener;
-                    s.AddSingleton(listener, sp => diagnosticEventListener(sp.GetCombinedServices()));
+                    s.AddSingleton(listener, factory);
                 });
             }
             else
             {
                 var listener = attribute.Listener;
-                builder.Services.AddSingleton(listener, diagnosticEventListener);
+                builder.Services.AddSingleton(listener, factory);
             }
         }
         else
diff --git a/src/HotChocolate/Core/src/Execution/DependencyInjection/RequestExecutorBuilderExtensions.Optimizer.cs b/src/HotChocolate/Core/src/Execution/DependencyInjection/RequestExecutorBuilderExtensions.Optimizer.cs
index e3e45cbc800..0d83d3c6e03 100644
--- a/src/HotChocolate/Core/src/Execution/DependencyInjection/RequestExecutorBuilderExtensions.Optimizer.cs
+++ b/src/HotChocolate/Core/src/Execution/DependencyInjection/RequestExecutorBuilderExtensions.Optimizer.cs
@@ -24,8 +24,7 @@ public static IRequestExecutorBuilder AddOperationCompilerOptimizer<T>(
         ArgumentNullException.ThrowIfNull(builder);
 
         builder.ConfigureSchemaServices(
-            sc => sc.AddSingleton<IOperationCompilerOptimizer>(
-                sp => factory(sp.GetCombinedServices())));
+            sc => sc.AddSingleton<IOperationCompilerOptimizer>(factory));
         return builder;
     }
 }
diff --git a/src/HotChocolate/Core/src/Execution/DependencyInjection/RequestExecutorBuilderExtensions.TransactionScope.cs b/src/HotChocolate/Core/src/Execution/DependencyInjection/RequestExecutorBuilderExtensions.TransactionScope.cs
index a058b313d41..f274846faf3 100644
--- a/src/HotChocolate/Core/src/Execution/DependencyInjection/RequestExecutorBuilderExtensions.TransactionScope.cs
+++ b/src/HotChocolate/Core/src/Execution/DependencyInjection/RequestExecutorBuilderExtensions.TransactionScope.cs
@@ -33,14 +33,10 @@ public static IRequestExecutorBuilder AddTransactionScopeHandler<T>(
 
         return ConfigureSchemaServices(
             builder,
-            services =>
+            static services =>
             {
-                // we remove all handlers from the schema DI
-                services.RemoveAll(typeof(ITransactionScopeHandler));
-
-                // and then reference the transaction scope handler from the global DI.
-                services.AddSingleton<ITransactionScopeHandler>(
-                    s => s.GetRootServiceProvider().GetRequiredService<T>());
+                services.RemoveAll<ITransactionScopeHandler>();
+                services.AddSingleton<ITransactionScopeHandler, T>();
             });
     }
 
@@ -50,7 +46,7 @@ public static IRequestExecutorBuilder AddTransactionScopeHandler<T>(
     /// <param name="builder">
     /// The request executor builder.
     /// </param>
-    /// <param name="create">
+    /// <param name="factory">
     /// A factory to create the transaction scope.
     /// </param>
     /// <returns>
@@ -59,17 +55,17 @@ public static IRequestExecutorBuilder AddTransactionScopeHandler<T>(
     /// <exception cref="ArgumentNullException"></exception>
     public static IRequestExecutorBuilder AddTransactionScopeHandler(
         this IRequestExecutorBuilder builder,
-        Func<IServiceProvider, ITransactionScopeHandler> create)
+        Func<IServiceProvider, ITransactionScopeHandler> factory)
     {
         ArgumentNullException.ThrowIfNull(builder);
-        ArgumentNullException.ThrowIfNull(create);
+        ArgumentNullException.ThrowIfNull(factory);
 
         return ConfigureSchemaServices(
             builder,
             services =>
             {
-                services.RemoveAll(typeof(ITransactionScopeHandler));
-                services.AddSingleton(sp => create(sp.GetCombinedServices()));
+                services.RemoveAll<ITransactionScopeHandler>();
+                services.AddSingleton(factory);
             });
     }
 
@@ -101,10 +97,7 @@ internal static IRequestExecutorBuilder TryAddNoOpTransactionScopeHandler(
 
         return ConfigureSchemaServices(
             builder,
-            services =>
-            {
-                services.TryAddSingleton<ITransactionScopeHandler>(
-                    sp => sp.GetRootServiceProvider().GetRequiredService<NoOpTransactionScopeHandler>());
-            });
+            static services =>
+                services.TryAddSingleton<ITransactionScopeHandler, NoOpTransactionScopeHandler>());
     }
 }
diff --git a/src/HotChocolate/Core/src/Types/SchemaBuilder.cs b/src/HotChocolate/Core/src/Types/SchemaBuilder.cs
index f835cf902ae..dcc01cdad52 100644
--- a/src/HotChocolate/Core/src/Types/SchemaBuilder.cs
+++ b/src/HotChocolate/Core/src/Types/SchemaBuilder.cs
@@ -225,11 +225,12 @@ public ISchemaBuilder SetTypeResolver(IsOfTypeFallback isOfType)
     }
 
     /// <inheritdoc />
+    // TODO: Should this be just SetServices?
     public ISchemaBuilder AddServices(IServiceProvider services)
     {
         ArgumentNullException.ThrowIfNull(services);
 
-        _services = _services is null ? services : new CombinedServiceProvider(_services, services);
+        _services = services;
 
         return this;
     }
diff --git a/src/HotChocolate/Fusion-vnext/src/Fusion.Execution/Configuration/RootServiceProviderAccessor.cs b/src/HotChocolate/Fusion-vnext/src/Fusion.Execution/Configuration/RootServiceProviderAccessor.cs
deleted file mode 100644
index f03289369bd..00000000000
--- a/src/HotChocolate/Fusion-vnext/src/Fusion.Execution/Configuration/RootServiceProviderAccessor.cs
+++ /dev/null
@@ -1,13 +0,0 @@
-namespace HotChocolate.Fusion.Configuration;
-
-internal sealed class RootServiceProviderAccessor : IRootServiceProviderAccessor
-{
-    public RootServiceProviderAccessor(IServiceProvider serviceProvider)
-    {
-        ArgumentNullException.ThrowIfNull(serviceProvider);
-
-        ServiceProvider = serviceProvider;
-    }
-
-    public IServiceProvider ServiceProvider { get; }
-}
diff --git a/src/HotChocolate/Fusion-vnext/src/Fusion.Execution/DependencyInjection/CoreFusionGatewayBuilderExtensions.Services.cs b/src/HotChocolate/Fusion-vnext/src/Fusion.Execution/DependencyInjection/CoreFusionGatewayBuilderExtensions.Services.cs
new file mode 100644
index 00000000000..72ea99ebe98
--- /dev/null
+++ b/src/HotChocolate/Fusion-vnext/src/Fusion.Execution/DependencyInjection/CoreFusionGatewayBuilderExtensions.Services.cs
@@ -0,0 +1,22 @@
+using HotChocolate.Fusion.Configuration;
+
+namespace Microsoft.Extensions.DependencyInjection;
+
+public static partial class CoreFusionGatewayBuilderExtensions
+{
+    /// <summary>
+    /// Resolves an instance of <typeparamref name="TService"/> from the application
+    /// service provider and makes it available as a singleton through the schema
+    /// service provider.
+    /// </summary>
+    /// <typeparam name="TService">
+    /// The type of service.
+    /// </typeparam>
+    public static IFusionGatewayBuilder AddApplicationService<TService>(
+        this IFusionGatewayBuilder builder)
+        where TService : class
+    {
+        return builder.ConfigureSchemaServices(
+            static (sp, sc) => sc.AddSingleton(sp.GetRequiredService<TService>()));
+    }
+}
diff --git a/src/HotChocolate/Fusion-vnext/src/Fusion.Execution/DependencyInjection/InternalServiceProviderExtensions.cs b/src/HotChocolate/Fusion-vnext/src/Fusion.Execution/DependencyInjection/InternalServiceProviderExtensions.cs
deleted file mode 100644
index 2ff165275af..00000000000
--- a/src/HotChocolate/Fusion-vnext/src/Fusion.Execution/DependencyInjection/InternalServiceProviderExtensions.cs
+++ /dev/null
@@ -1,9 +0,0 @@
-using HotChocolate;
-
-namespace Microsoft.Extensions.DependencyInjection;
-
-internal static class InternalServiceProviderExtensions
-{
-    public static T GetRequiredRootService<T>(this IServiceProvider services) where T : notnull
-        => services.GetRequiredService<IRootServiceProviderAccessor>().ServiceProvider.GetRequiredService<T>();
-}
diff --git a/src/HotChocolate/Fusion-vnext/src/Fusion.Execution/Execution/FusionRequestExecutorManager.cs b/src/HotChocolate/Fusion-vnext/src/Fusion.Execution/Execution/FusionRequestExecutorManager.cs
index 4b8ad1b3afc..fb08719546e 100644
--- a/src/HotChocolate/Fusion-vnext/src/Fusion.Execution/Execution/FusionRequestExecutorManager.cs
+++ b/src/HotChocolate/Fusion-vnext/src/Fusion.Execution/Execution/FusionRequestExecutorManager.cs
@@ -363,9 +363,6 @@ private void AddCoreServices(
         FusionOptions options,
         FusionRequestOptions requestOptions)
     {
-        services.AddSingleton<IRootServiceProviderAccessor>(
-            new RootServiceProviderAccessor(_applicationServices));
-
         services.AddSingleton(static _ => new RequestExecutorAccessor());
         services.AddSingleton(static sp => sp.GetRequiredService<RequestExecutorAccessor>().RequestExecutor);
         services.AddSingleton<IRequestExecutor>(sp => sp.GetRequiredService<FusionRequestExecutor>());
diff --git a/src/HotChocolate/Fusion-vnext/test/Fusion.Execution.Tests/Execution/FusionRequestExecutorManagerTests.cs b/src/HotChocolate/Fusion-vnext/test/Fusion.Execution.Tests/Execution/FusionRequestExecutorManagerTests.cs
index 82319ec4e84..9a963c9faa3 100644
--- a/src/HotChocolate/Fusion-vnext/test/Fusion.Execution.Tests/Execution/FusionRequestExecutorManagerTests.cs
+++ b/src/HotChocolate/Fusion-vnext/test/Fusion.Execution.Tests/Execution/FusionRequestExecutorManagerTests.cs
@@ -387,7 +387,7 @@ public async Task Executor_Resolution_Should_Be_Parallel()
         cts.Dispose();
     }
 
-    [Fact(Skip = "SomeService needs to be registered with the schema services")]
+    [Fact]
     public async Task WarmupTask_Should_Be_Able_To_Access_Schema_And_Regular_Services()
     {
         // arrange
@@ -398,6 +398,7 @@ public async Task WarmupTask_Should_Be_Able_To_Access_Schema_And_Regular_Service
         services
             .AddGraphQLGateway()
             .AddInMemoryConfiguration(CreateConfiguration().Schema)
+            .AddApplicationService<SomeService>()
             .AddWarmupTask<CustomWarmupTask>();
         var provider = services.BuildServiceProvider();
         var manager = provider.GetRequiredService<FusionRequestExecutorManager>();
diff --git a/src/HotChocolate/PersistedOperations/src/PersistedOperations.AzureBlobStorage/Extensions/HotChocolateAzureBlobStoragePersistedOperationsRequestExecutorBuilderExtensions.cs b/src/HotChocolate/PersistedOperations/src/PersistedOperations.AzureBlobStorage/Extensions/HotChocolateAzureBlobStoragePersistedOperationsRequestExecutorBuilderExtensions.cs
index 7162292cfad..19e7568a908 100644
--- a/src/HotChocolate/PersistedOperations/src/PersistedOperations.AzureBlobStorage/Extensions/HotChocolateAzureBlobStoragePersistedOperationsRequestExecutorBuilderExtensions.cs
+++ b/src/HotChocolate/PersistedOperations/src/PersistedOperations.AzureBlobStorage/Extensions/HotChocolateAzureBlobStoragePersistedOperationsRequestExecutorBuilderExtensions.cs
@@ -27,7 +27,6 @@ public static IRequestExecutorBuilder AddAzureBlobStorageOperationDocumentStorag
         ArgumentNullException.ThrowIfNull(containerClientFactory);
 
         return builder.ConfigureSchemaServices(
-            s => s.AddAzureBlobStorageOperationDocumentStorage(
-                sp => containerClientFactory(sp.GetCombinedServices())));
+            s => s.AddAzureBlobStorageOperationDocumentStorage(containerClientFactory));
     }
 }
diff --git a/src/HotChocolate/PersistedOperations/src/PersistedOperations.Redis/Extensions/HotChocolateRedisPersistedOperationsRequestExecutorBuilderExtensions.cs b/src/HotChocolate/PersistedOperations/src/PersistedOperations.Redis/Extensions/HotChocolateRedisPersistedOperationsRequestExecutorBuilderExtensions.cs
index f95141d9ffa..3b753f0e836 100644
--- a/src/HotChocolate/PersistedOperations/src/PersistedOperations.Redis/Extensions/HotChocolateRedisPersistedOperationsRequestExecutorBuilderExtensions.cs
+++ b/src/HotChocolate/PersistedOperations/src/PersistedOperations.Redis/Extensions/HotChocolateRedisPersistedOperationsRequestExecutorBuilderExtensions.cs
@@ -31,9 +31,7 @@ public static IRequestExecutorBuilder AddRedisOperationDocumentStorage(
         ArgumentNullException.ThrowIfNull(databaseFactory);
 
         return builder.ConfigureSchemaServices(
-            s => s.AddRedisOperationDocumentStorage(
-                sp => databaseFactory(sp.GetCombinedServices()),
-                queryExpiration));
+            s => s.AddRedisOperationDocumentStorage(databaseFactory, queryExpiration));
     }
 
     /// <summary>
@@ -58,7 +56,7 @@ public static IRequestExecutorBuilder AddRedisOperationDocumentStorage(
 
         return builder.ConfigureSchemaServices(
             s => s.AddRedisOperationDocumentStorage(
-                sp => multiplexerFactory(sp.GetCombinedServices()).GetDatabase(),
+                sp => multiplexerFactory(sp).GetDatabase(),
                 queryExpiration));
     }