diff --git a/src/Http/Routing/src/EndpointMiddleware.cs b/src/Http/Routing/src/EndpointMiddleware.cs
index 08e5bb1db7b3..41919ff00cc0 100644
--- a/src/Http/Routing/src/EndpointMiddleware.cs
+++ b/src/Http/Routing/src/EndpointMiddleware.cs
@@ -1,8 +1,6 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
-using System;
-using System.Threading.Tasks;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Cors.Infrastructure;
 using Microsoft.AspNetCore.Http;
@@ -90,7 +88,7 @@ private static void ThrowMissingAuthMiddlewareException(Endpoint endpoint)
             throw new InvalidOperationException($"Endpoint {endpoint.DisplayName} contains authorization metadata, " +
                 "but a middleware was not found that supports authorization." +
                 Environment.NewLine +
-                "Configure your application startup by adding app.UseAuthorization() inside the call to Configure(..) in the application startup code. The call to app.UseAuthorization() must appear between app.UseRouting() and app.UseEndpoints(...).");
+                "Configure your application startup by adding app.UseAuthorization() in the application startup code. If there are calls to app.UseRouting() and app.UseEndpoints(...), the call to app.UseAuthorization() must go between them.");
         }
 
         private static void ThrowMissingCorsMiddlewareException(Endpoint endpoint)
@@ -98,7 +96,7 @@ private static void ThrowMissingCorsMiddlewareException(Endpoint endpoint)
             throw new InvalidOperationException($"Endpoint {endpoint.DisplayName} contains CORS metadata, " +
                 "but a middleware was not found that supports CORS." +
                 Environment.NewLine +
-                "Configure your application startup by adding app.UseCors() inside the call to Configure(..) in the application startup code. The call to app.UseCors() must appear between app.UseRouting() and app.UseEndpoints(...).");
+                "Configure your application startup by adding app.UseCors() in the application startup code. If there are calls to app.UseRouting() and app.UseEndpoints(...), the call to app.UseCors() must go between them.");
         }
 
         private static partial class Log
diff --git a/src/Http/Routing/test/FunctionalTests/EndpointRoutingIntegrationTest.cs b/src/Http/Routing/test/FunctionalTests/EndpointRoutingIntegrationTest.cs
index 9a1f82673467..0d6f2f4fa77c 100644
--- a/src/Http/Routing/test/FunctionalTests/EndpointRoutingIntegrationTest.cs
+++ b/src/Http/Routing/test/FunctionalTests/EndpointRoutingIntegrationTest.cs
@@ -20,13 +20,13 @@ public class EndpointRoutingIntegrationTest
         private static readonly RequestDelegate TestDelegate = async context => await Task.Yield();
         private static readonly string AuthErrorMessage = "Endpoint / contains authorization metadata, but a middleware was not found that supports authorization." +
             Environment.NewLine +
-            "Configure your application startup by adding app.UseAuthorization() inside the call to Configure(..) in the application startup code. " +
-            "The call to app.UseAuthorization() must appear between app.UseRouting() and app.UseEndpoints(...).";
+            "Configure your application startup by adding app.UseAuthorization() in the application startup code. " +
+            "If there are calls to app.UseRouting() and app.UseEndpoints(...), the call to app.UseAuthorization() must go between them.";
 
         private static readonly string CORSErrorMessage = "Endpoint / contains CORS metadata, but a middleware was not found that supports CORS." +
             Environment.NewLine +
-            "Configure your application startup by adding app.UseCors() inside the call to Configure(..) in the application startup code. " +
-            "The call to app.UseCors() must appear between app.UseRouting() and app.UseEndpoints(...).";
+            "Configure your application startup by adding app.UseCors() in the application startup code. " +
+            "If there are calls to app.UseRouting() and app.UseEndpoints(...), the call to app.UseCors() must go between them.";
 
         [Fact]
         public async Task AuthorizationMiddleware_WhenNoAuthMetadataIsConfigured()
diff --git a/src/Http/Routing/test/UnitTests/EndpointMiddlewareTest.cs b/src/Http/Routing/test/UnitTests/EndpointMiddlewareTest.cs
index 5bdef13fe567..2f6482ec716f 100644
--- a/src/Http/Routing/test/UnitTests/EndpointMiddlewareTest.cs
+++ b/src/Http/Routing/test/UnitTests/EndpointMiddlewareTest.cs
@@ -1,16 +1,12 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
-using System;
-using System.Threading.Tasks;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Cors.Infrastructure;
 using Microsoft.AspNetCore.Http;
-using Microsoft.AspNetCore.Http.Features;
 using Microsoft.Extensions.Logging.Abstractions;
 using Microsoft.Extensions.Options;
 using Moq;
-using Xunit;
 
 namespace Microsoft.AspNetCore.Routing
 {
@@ -101,8 +97,8 @@ public async Task Invoke_WithEndpoint_ThrowsIfAuthAttributesWereFound_ButAuthMid
             // Arrange
             var expected = "Endpoint Test contains authorization metadata, but a middleware was not found that supports authorization." +
                 Environment.NewLine +
-                "Configure your application startup by adding app.UseAuthorization() inside the call to Configure(..) in the application startup code. " +
-                "The call to app.UseAuthorization() must appear between app.UseRouting() and app.UseEndpoints(...).";
+                "Configure your application startup by adding app.UseAuthorization() in the application startup code. " +
+                "If there are calls to app.UseRouting() and app.UseEndpoints(...), the call to app.UseAuthorization() must go between them.";
             var httpContext = new DefaultHttpContext
             {
                 RequestServices = new ServiceProvider()
@@ -198,8 +194,8 @@ public async Task Invoke_WithEndpoint_ThrowsIfCorsMetadataWasFound_ButCorsMiddle
             // Arrange
             var expected = "Endpoint Test contains CORS metadata, but a middleware was not found that supports CORS." +
                 Environment.NewLine +
-                "Configure your application startup by adding app.UseCors() inside the call to Configure(..) in the application startup code. " +
-                "The call to app.UseCors() must appear between app.UseRouting() and app.UseEndpoints(...).";
+                "Configure your application startup by adding app.UseCors() in the application startup code. " +
+                "If there are calls to app.UseRouting() and app.UseEndpoints(...), the call to app.UseCors() must go between them.";
             var httpContext = new DefaultHttpContext
             {
                 RequestServices = new ServiceProvider()
diff --git a/src/Security/Authorization/Policy/src/AuthorizationAppBuilderExtensions.cs b/src/Security/Authorization/Policy/src/AuthorizationAppBuilderExtensions.cs
index 2fccd211f1db..1fa8f2dd0a6b 100644
--- a/src/Security/Authorization/Policy/src/AuthorizationAppBuilderExtensions.cs
+++ b/src/Security/Authorization/Policy/src/AuthorizationAppBuilderExtensions.cs
@@ -1,7 +1,6 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
-using System;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Authorization.Policy;
 using Microsoft.Extensions.DependencyInjection;
@@ -42,8 +41,7 @@ private static void VerifyServicesRegistered(IApplicationBuilder app)
             {
                 throw new InvalidOperationException(Resources.FormatException_UnableToFindServices(
                     nameof(IServiceCollection),
-                    nameof(PolicyServiceCollectionExtensions.AddAuthorization),
-                    "ConfigureServices(...)"));
+                    nameof(PolicyServiceCollectionExtensions.AddAuthorization)));
             }
         }
     }
diff --git a/src/Security/Authorization/Policy/src/Resources.resx b/src/Security/Authorization/Policy/src/Resources.resx
index 15d6f7d53c0f..93cc19ce4f71 100644
--- a/src/Security/Authorization/Policy/src/Resources.resx
+++ b/src/Security/Authorization/Policy/src/Resources.resx
@@ -118,6 +118,6 @@
     <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
   </resheader>
   <data name="Exception_UnableToFindServices" xml:space="preserve">
-    <value>Unable to find the required services. Please add all the required services by calling '{0}.{1}' inside the call to '{2}' in the application startup code.</value>
+    <value>Unable to find the required services. Please add all the required services by calling '{0}.{1}' in the application startup code.</value>
   </data>
 </root>
\ No newline at end of file
diff --git a/src/Security/Authorization/test/AuthorizationAppBuilderExtensionsTests.cs b/src/Security/Authorization/test/AuthorizationAppBuilderExtensionsTests.cs
index 73cc1138721a..1f19e2486012 100644
--- a/src/Security/Authorization/test/AuthorizationAppBuilderExtensionsTests.cs
+++ b/src/Security/Authorization/test/AuthorizationAppBuilderExtensionsTests.cs
@@ -61,8 +61,7 @@ public void UseAuthorization_MissingRequiredSevices_FriendlyErrorMessage()
             // Assert
             Assert.Equal(
                 "Unable to find the required services. Please add all the required services by calling " +
-                "'IServiceCollection.AddAuthorization' inside the call to 'ConfigureServices(...)' " +
-                "in the application startup code.",
+                "'IServiceCollection.AddAuthorization' in the application startup code.",
                 ex.Message);
         }