diff --git a/src/Transports.AspNetCore/AuthorizationVisitorBase.Validation.cs b/src/Transports.AspNetCore/AuthorizationVisitorBase.Validation.cs
index 43a834a2..451c16cb 100644
--- a/src/Transports.AspNetCore/AuthorizationVisitorBase.Validation.cs
+++ b/src/Transports.AspNetCore/AuthorizationVisitorBase.Validation.cs
@@ -141,6 +141,7 @@ protected virtual void HandleNodeNotAuthorized(ValidationInfo info)
     {
         var resource = GenerateResourceDescription(info);
         var err = info.Node == null ? new AccessDeniedError(resource) : new AccessDeniedError(resource, info.Context.Document.Source, info.Node);
+        err.PreferredStatusCode = HttpStatusCode.Unauthorized;
         info.Context.ReportError(err);
     }
 
diff --git a/src/Transports.AspNetCore/Errors/AccessDeniedError.cs b/src/Transports.AspNetCore/Errors/AccessDeniedError.cs
index 7ad2c685..b678a8ea 100644
--- a/src/Transports.AspNetCore/Errors/AccessDeniedError.cs
+++ b/src/Transports.AspNetCore/Errors/AccessDeniedError.cs
@@ -3,7 +3,7 @@ namespace GraphQL.Server.Transports.AspNetCore.Errors;
 /// <summary>
 /// Represents an error indicating that the user is not allowed access to the specified resource.
 /// </summary>
-public class AccessDeniedError : ValidationError
+public class AccessDeniedError : ValidationError, IHasPreferredStatusCode
 {
     /// <inheritdoc cref="AccessDeniedError"/>
     public AccessDeniedError(string resource)
@@ -29,4 +29,7 @@ public AccessDeniedError(string resource, GraphQLParser.ROM originalQuery, param
     /// Returns the list of role memberships that would allow access to these node(s).
     /// </summary>
     public List<string>? RolesRequired { get; set; }
+
+    /// <inheritdoc/>
+    public HttpStatusCode PreferredStatusCode { get; set; } = HttpStatusCode.Forbidden;
 }
diff --git a/src/Transports.AspNetCore/Errors/FileCountExceededError.cs b/src/Transports.AspNetCore/Errors/FileCountExceededError.cs
index 0d5733cc..79f6a4b9 100644
--- a/src/Transports.AspNetCore/Errors/FileCountExceededError.cs
+++ b/src/Transports.AspNetCore/Errors/FileCountExceededError.cs
@@ -14,5 +14,5 @@ public FileCountExceededError()
     }
 
     /// <inheritdoc/>
-    public HttpStatusCode PreferredStatusCode => HttpStatusCode.RequestEntityTooLarge;
+    public HttpStatusCode PreferredStatusCode { get; set; } = HttpStatusCode.RequestEntityTooLarge;
 }
diff --git a/src/Transports.AspNetCore/Errors/FileSizeExceededError.cs b/src/Transports.AspNetCore/Errors/FileSizeExceededError.cs
index 67b998c5..9f897d53 100644
--- a/src/Transports.AspNetCore/Errors/FileSizeExceededError.cs
+++ b/src/Transports.AspNetCore/Errors/FileSizeExceededError.cs
@@ -14,5 +14,5 @@ public FileSizeExceededError()
     }
 
     /// <inheritdoc/>
-    public HttpStatusCode PreferredStatusCode => HttpStatusCode.RequestEntityTooLarge;
+    public HttpStatusCode PreferredStatusCode { get; set; } = HttpStatusCode.RequestEntityTooLarge;
 }
diff --git a/src/Transports.AspNetCore/Errors/InvalidContentTypeError.cs b/src/Transports.AspNetCore/Errors/InvalidContentTypeError.cs
index 83194aa2..8fcc9872 100644
--- a/src/Transports.AspNetCore/Errors/InvalidContentTypeError.cs
+++ b/src/Transports.AspNetCore/Errors/InvalidContentTypeError.cs
@@ -3,11 +3,14 @@ namespace GraphQL.Server.Transports.AspNetCore.Errors;
 /// <summary>
 /// Represents an error indicating that the content-type is invalid, for example, could not be parsed or is not supported.
 /// </summary>
-public class InvalidContentTypeError : RequestError
+public class InvalidContentTypeError : RequestError, IHasPreferredStatusCode
 {
     /// <inheritdoc cref="InvalidContentTypeError"/>
     public InvalidContentTypeError() : base("Invalid 'Content-Type' header.") { }
 
     /// <inheritdoc cref="InvalidContentTypeError"/>
     public InvalidContentTypeError(string message) : base("Invalid 'Content-Type' header: " + message) { }
+
+    /// <inheritdoc/>
+    public HttpStatusCode PreferredStatusCode { get; set; } = HttpStatusCode.UnsupportedMediaType;
 }
diff --git a/src/Transports.AspNetCore/GraphQLHttpMiddleware.cs b/src/Transports.AspNetCore/GraphQLHttpMiddleware.cs
index a8ed6d37..5d493710 100644
--- a/src/Transports.AspNetCore/GraphQLHttpMiddleware.cs
+++ b/src/Transports.AspNetCore/GraphQLHttpMiddleware.cs
@@ -273,7 +273,7 @@ protected virtual async Task InvokeAsync(HttpContext context, RequestDelegate ne
                     }
                     catch (ExecutionError ex) // catches FileCountExceededError, FileSizeExceededError, InvalidMapError
                     {
-                        await WriteErrorResponseAsync(context, ex is IHasPreferredStatusCode sc ? sc.PreferredStatusCode : HttpStatusCode.BadRequest, ex);
+                        await WriteErrorResponseAsync(context, ex);
                         return null;
                     }
                     catch (Exception ex) // catches JSON deserialization exceptions
@@ -1046,19 +1046,19 @@ await webSocket.CloseAsync(
     /// Writes an access denied message to the output with status code <c>401 Unauthorized</c> when the user is not authenticated.
     /// </summary>
     protected virtual Task HandleNotAuthenticatedAsync(HttpContext context, RequestDelegate next)
-        => WriteErrorResponseAsync(context, HttpStatusCode.Unauthorized, new AccessDeniedError("schema"));
+        => WriteErrorResponseAsync(context, new AccessDeniedError("schema") { PreferredStatusCode = HttpStatusCode.Unauthorized });
 
     /// <summary>
     /// Writes an access denied message to the output with status code <c>403 Forbidden</c> when the user fails the role checks.
     /// </summary>
     protected virtual Task HandleNotAuthorizedRoleAsync(HttpContext context, RequestDelegate next)
-        => WriteErrorResponseAsync(context, HttpStatusCode.Forbidden, new AccessDeniedError("schema") { RolesRequired = _options.AuthorizedRoles });
+        => WriteErrorResponseAsync(context, new AccessDeniedError("schema") { RolesRequired = _options.AuthorizedRoles });
 
     /// <summary>
     /// Writes an access denied message to the output with status code <c>403 Forbidden</c> when the user fails the policy check.
     /// </summary>
     protected virtual Task HandleNotAuthorizedPolicyAsync(HttpContext context, RequestDelegate next, AuthorizationResult authorizationResult)
-        => WriteErrorResponseAsync(context, HttpStatusCode.Forbidden, new AccessDeniedError("schema") { PolicyRequired = _options.AuthorizedPolicy, PolicyAuthorizationResult = authorizationResult });
+        => WriteErrorResponseAsync(context, new AccessDeniedError("schema") { PolicyRequired = _options.AuthorizedPolicy, PolicyAuthorizationResult = authorizationResult });
 
     /// <summary>
     /// Writes a '400 JSON body text could not be parsed.' message to the output.
@@ -1095,7 +1095,7 @@ protected virtual Task HandleWebSocketSubProtocolNotSupportedAsync(HttpContext c
     /// Writes a '415 Invalid Content-Type header: could not be parsed.' message to the output.
     /// </summary>
     protected virtual Task HandleContentTypeCouldNotBeParsedErrorAsync(HttpContext context, RequestDelegate next)
-        => WriteErrorResponseAsync(context, HttpStatusCode.UnsupportedMediaType, new InvalidContentTypeError($"value '{context.Request.ContentType}' could not be parsed."));
+        => WriteErrorResponseAsync(context, new InvalidContentTypeError($"value '{context.Request.ContentType}' could not be parsed."));
 
     /// <summary>
     /// Writes a '415 Invalid Content-Type header: non-supported media type.' message to the output.
@@ -1103,7 +1103,6 @@ protected virtual Task HandleContentTypeCouldNotBeParsedErrorAsync(HttpContext c
     protected virtual Task HandleInvalidContentTypeErrorAsync(HttpContext context, RequestDelegate next)
         => WriteErrorResponseAsync(
             context,
-            HttpStatusCode.UnsupportedMediaType,
             _options.ReadFormOnPost
             ? new InvalidContentTypeError($"non-supported media type '{context.Request.ContentType}'. Must be '{MEDIATYPE_JSON}', '{MEDIATYPE_GRAPHQL}' or a form body.")
             : new InvalidContentTypeError($"non-supported media type '{context.Request.ContentType}'. Must be '{MEDIATYPE_JSON}' or '{MEDIATYPE_GRAPHQL}'.")
diff --git a/tests/ApiApprovalTests/net50+net60+net80/GraphQL.Server.Transports.AspNetCore.approved.txt b/tests/ApiApprovalTests/net50+net60+net80/GraphQL.Server.Transports.AspNetCore.approved.txt
index d72fac9e..279e2717 100644
--- a/tests/ApiApprovalTests/net50+net60+net80/GraphQL.Server.Transports.AspNetCore.approved.txt
+++ b/tests/ApiApprovalTests/net50+net60+net80/GraphQL.Server.Transports.AspNetCore.approved.txt
@@ -192,12 +192,13 @@ namespace GraphQL.Server.Transports.AspNetCore
 }
 namespace GraphQL.Server.Transports.AspNetCore.Errors
 {
-    public class AccessDeniedError : GraphQL.Validation.ValidationError
+    public class AccessDeniedError : GraphQL.Validation.ValidationError, GraphQL.Server.Transports.AspNetCore.Errors.IHasPreferredStatusCode
     {
         public AccessDeniedError(string resource) { }
         public AccessDeniedError(string resource, GraphQLParser.ROM originalQuery, params GraphQLParser.AST.ASTNode[] nodes) { }
         public Microsoft.AspNetCore.Authorization.AuthorizationResult? PolicyAuthorizationResult { get; set; }
         public string? PolicyRequired { get; set; }
+        public System.Net.HttpStatusCode PreferredStatusCode { get; set; }
         public System.Collections.Generic.List<string>? RolesRequired { get; set; }
     }
     public class BatchedRequestsNotSupportedError : GraphQL.Execution.RequestError
@@ -212,12 +213,12 @@ namespace GraphQL.Server.Transports.AspNetCore.Errors
     public class FileCountExceededError : GraphQL.Execution.RequestError, GraphQL.Server.Transports.AspNetCore.Errors.IHasPreferredStatusCode
     {
         public FileCountExceededError() { }
-        public System.Net.HttpStatusCode PreferredStatusCode { get; }
+        public System.Net.HttpStatusCode PreferredStatusCode { get; set; }
     }
     public class FileSizeExceededError : GraphQL.Execution.RequestError, GraphQL.Server.Transports.AspNetCore.Errors.IHasPreferredStatusCode
     {
         public FileSizeExceededError() { }
-        public System.Net.HttpStatusCode PreferredStatusCode { get; }
+        public System.Net.HttpStatusCode PreferredStatusCode { get; set; }
     }
     public class HttpMethodValidationError : GraphQL.Validation.ValidationError
     {
@@ -227,10 +228,11 @@ namespace GraphQL.Server.Transports.AspNetCore.Errors
     {
         System.Net.HttpStatusCode PreferredStatusCode { get; }
     }
-    public class InvalidContentTypeError : GraphQL.Execution.RequestError
+    public class InvalidContentTypeError : GraphQL.Execution.RequestError, GraphQL.Server.Transports.AspNetCore.Errors.IHasPreferredStatusCode
     {
         public InvalidContentTypeError() { }
         public InvalidContentTypeError(string message) { }
+        public System.Net.HttpStatusCode PreferredStatusCode { get; set; }
     }
     public class InvalidMapError : GraphQL.Execution.RequestError
     {
diff --git a/tests/ApiApprovalTests/netcoreapp21+netstandard20/GraphQL.Server.Transports.AspNetCore.approved.txt b/tests/ApiApprovalTests/netcoreapp21+netstandard20/GraphQL.Server.Transports.AspNetCore.approved.txt
index 3de02297..e1a2d4c7 100644
--- a/tests/ApiApprovalTests/netcoreapp21+netstandard20/GraphQL.Server.Transports.AspNetCore.approved.txt
+++ b/tests/ApiApprovalTests/netcoreapp21+netstandard20/GraphQL.Server.Transports.AspNetCore.approved.txt
@@ -210,12 +210,13 @@ namespace GraphQL.Server.Transports.AspNetCore
 }
 namespace GraphQL.Server.Transports.AspNetCore.Errors
 {
-    public class AccessDeniedError : GraphQL.Validation.ValidationError
+    public class AccessDeniedError : GraphQL.Validation.ValidationError, GraphQL.Server.Transports.AspNetCore.Errors.IHasPreferredStatusCode
     {
         public AccessDeniedError(string resource) { }
         public AccessDeniedError(string resource, GraphQLParser.ROM originalQuery, params GraphQLParser.AST.ASTNode[] nodes) { }
         public Microsoft.AspNetCore.Authorization.AuthorizationResult? PolicyAuthorizationResult { get; set; }
         public string? PolicyRequired { get; set; }
+        public System.Net.HttpStatusCode PreferredStatusCode { get; set; }
         public System.Collections.Generic.List<string>? RolesRequired { get; set; }
     }
     public class BatchedRequestsNotSupportedError : GraphQL.Execution.RequestError
@@ -230,12 +231,12 @@ namespace GraphQL.Server.Transports.AspNetCore.Errors
     public class FileCountExceededError : GraphQL.Execution.RequestError, GraphQL.Server.Transports.AspNetCore.Errors.IHasPreferredStatusCode
     {
         public FileCountExceededError() { }
-        public System.Net.HttpStatusCode PreferredStatusCode { get; }
+        public System.Net.HttpStatusCode PreferredStatusCode { get; set; }
     }
     public class FileSizeExceededError : GraphQL.Execution.RequestError, GraphQL.Server.Transports.AspNetCore.Errors.IHasPreferredStatusCode
     {
         public FileSizeExceededError() { }
-        public System.Net.HttpStatusCode PreferredStatusCode { get; }
+        public System.Net.HttpStatusCode PreferredStatusCode { get; set; }
     }
     public class HttpMethodValidationError : GraphQL.Validation.ValidationError
     {
@@ -245,10 +246,11 @@ namespace GraphQL.Server.Transports.AspNetCore.Errors
     {
         System.Net.HttpStatusCode PreferredStatusCode { get; }
     }
-    public class InvalidContentTypeError : GraphQL.Execution.RequestError
+    public class InvalidContentTypeError : GraphQL.Execution.RequestError, GraphQL.Server.Transports.AspNetCore.Errors.IHasPreferredStatusCode
     {
         public InvalidContentTypeError() { }
         public InvalidContentTypeError(string message) { }
+        public System.Net.HttpStatusCode PreferredStatusCode { get; set; }
     }
     public class InvalidMapError : GraphQL.Execution.RequestError
     {
diff --git a/tests/ApiApprovalTests/netcoreapp31/GraphQL.Server.Transports.AspNetCore.approved.txt b/tests/ApiApprovalTests/netcoreapp31/GraphQL.Server.Transports.AspNetCore.approved.txt
index 2122e599..6ed0eab4 100644
--- a/tests/ApiApprovalTests/netcoreapp31/GraphQL.Server.Transports.AspNetCore.approved.txt
+++ b/tests/ApiApprovalTests/netcoreapp31/GraphQL.Server.Transports.AspNetCore.approved.txt
@@ -192,12 +192,13 @@ namespace GraphQL.Server.Transports.AspNetCore
 }
 namespace GraphQL.Server.Transports.AspNetCore.Errors
 {
-    public class AccessDeniedError : GraphQL.Validation.ValidationError
+    public class AccessDeniedError : GraphQL.Validation.ValidationError, GraphQL.Server.Transports.AspNetCore.Errors.IHasPreferredStatusCode
     {
         public AccessDeniedError(string resource) { }
         public AccessDeniedError(string resource, GraphQLParser.ROM originalQuery, params GraphQLParser.AST.ASTNode[] nodes) { }
         public Microsoft.AspNetCore.Authorization.AuthorizationResult? PolicyAuthorizationResult { get; set; }
         public string? PolicyRequired { get; set; }
+        public System.Net.HttpStatusCode PreferredStatusCode { get; set; }
         public System.Collections.Generic.List<string>? RolesRequired { get; set; }
     }
     public class BatchedRequestsNotSupportedError : GraphQL.Execution.RequestError
@@ -212,12 +213,12 @@ namespace GraphQL.Server.Transports.AspNetCore.Errors
     public class FileCountExceededError : GraphQL.Execution.RequestError, GraphQL.Server.Transports.AspNetCore.Errors.IHasPreferredStatusCode
     {
         public FileCountExceededError() { }
-        public System.Net.HttpStatusCode PreferredStatusCode { get; }
+        public System.Net.HttpStatusCode PreferredStatusCode { get; set; }
     }
     public class FileSizeExceededError : GraphQL.Execution.RequestError, GraphQL.Server.Transports.AspNetCore.Errors.IHasPreferredStatusCode
     {
         public FileSizeExceededError() { }
-        public System.Net.HttpStatusCode PreferredStatusCode { get; }
+        public System.Net.HttpStatusCode PreferredStatusCode { get; set; }
     }
     public class HttpMethodValidationError : GraphQL.Validation.ValidationError
     {
@@ -227,10 +228,11 @@ namespace GraphQL.Server.Transports.AspNetCore.Errors
     {
         System.Net.HttpStatusCode PreferredStatusCode { get; }
     }
-    public class InvalidContentTypeError : GraphQL.Execution.RequestError
+    public class InvalidContentTypeError : GraphQL.Execution.RequestError, GraphQL.Server.Transports.AspNetCore.Errors.IHasPreferredStatusCode
     {
         public InvalidContentTypeError() { }
         public InvalidContentTypeError(string message) { }
+        public System.Net.HttpStatusCode PreferredStatusCode { get; set; }
     }
     public class InvalidMapError : GraphQL.Execution.RequestError
     {