diff --git a/sdk/entra/Microsoft.Azure.WebJobs.Extensions.AuthenticationEvents/src/AuthenticationEventBinding.cs b/sdk/entra/Microsoft.Azure.WebJobs.Extensions.AuthenticationEvents/src/AuthenticationEventBinding.cs
index c7b5676b7e30..b0315cf7b114 100644
--- a/sdk/entra/Microsoft.Azure.WebJobs.Extensions.AuthenticationEvents/src/AuthenticationEventBinding.cs
+++ b/sdk/entra/Microsoft.Azure.WebJobs.Extensions.AuthenticationEvents/src/AuthenticationEventBinding.cs
@@ -248,10 +248,7 @@ internal static AuthenticationEventMetadata GetEventAndValidateSchema(string bod
         {
             try
             {
-                if (!Helpers.IsJson(body))
-                {
-                    throw new RequestValidationException(AuthenticationEventResource.Ex_Invalid_JsonPayload);
-                }
+                Helpers.ValidateJson(body);
             }
             catch (JsonException ex)
             {
diff --git a/sdk/entra/Microsoft.Azure.WebJobs.Extensions.AuthenticationEvents/src/AuthenticationEventResource.Designer.cs b/sdk/entra/Microsoft.Azure.WebJobs.Extensions.AuthenticationEvents/src/AuthenticationEventResource.Designer.cs
index b4f5496093b2..4a1cbc426aad 100644
--- a/sdk/entra/Microsoft.Azure.WebJobs.Extensions.AuthenticationEvents/src/AuthenticationEventResource.Designer.cs
+++ b/sdk/entra/Microsoft.Azure.WebJobs.Extensions.AuthenticationEvents/src/AuthenticationEventResource.Designer.cs
@@ -79,6 +79,15 @@ internal static string Ex_Context_Null {
             }
         }
         
+        /// <summary>
+        ///   Looks up a localized string similar to JSON is null or empty..
+        /// </summary>
+        internal static string Ex_Empty_Json {
+            get {
+                return ResourceManager.GetString("Ex_Empty_Json", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   Looks up a localized string similar to Cannot determine the event from payload, please check that the incoming payload is a valid JSON string and contains the event type..
         /// </summary>
@@ -188,7 +197,7 @@ internal static string Ex_Invalid_Response {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Return type is invalid, please return either an AuthEventResponse, HttpResponse, HttpResponseMessage or string in your function return..
+        ///   Looks up a localized string similar to Return type is invalid, please return either an AuthEventResponse, HttpResponse, HttpResponseMessage or string in your function return.
         /// </summary>
         internal static string Ex_Invalid_Return {
             get {
diff --git a/sdk/entra/Microsoft.Azure.WebJobs.Extensions.AuthenticationEvents/src/AuthenticationEventResource.resx b/sdk/entra/Microsoft.Azure.WebJobs.Extensions.AuthenticationEvents/src/AuthenticationEventResource.resx
index d957f840d895..31fe2ad8dbd4 100644
--- a/sdk/entra/Microsoft.Azure.WebJobs.Extensions.AuthenticationEvents/src/AuthenticationEventResource.resx
+++ b/sdk/entra/Microsoft.Azure.WebJobs.Extensions.AuthenticationEvents/src/AuthenticationEventResource.resx
@@ -123,6 +123,9 @@
   <data name="Ex_Context_Null" xml:space="preserve">
     <value>ListenerFactoryContext is null</value>
   </data>
+  <data name="Ex_Empty_Json" xml:space="preserve">
+    <value>JSON is null or empty.</value>
+  </data>
   <data name="Ex_Event_Missing" xml:space="preserve">
     <value>Cannot determine the event from payload, please check that the incoming payload is a valid JSON string and contains the event type.</value>
   </data>
@@ -160,7 +163,7 @@
     <value>Response validation failed, see inner exceptions.</value>
   </data>
   <data name="Ex_Invalid_Return" xml:space="preserve">
-    <value>Return type is invalid, please return either an AuthEventResponse, HttpResponse, HttpResponseMessage or string in your function return.</value>
+    <value>Return type is invalid, please return either an AuthEventResponse, HttpResponse, HttpResponseMessage or string in your function return</value>
   </data>
   <data name="Ex_Invalid_SchemaVersion" xml:space="preserve">
     <value>Invalid version on Schema</value>
diff --git a/sdk/entra/Microsoft.Azure.WebJobs.Extensions.AuthenticationEvents/src/AuthenticationEventResponseHandler.cs b/sdk/entra/Microsoft.Azure.WebJobs.Extensions.AuthenticationEvents/src/AuthenticationEventResponseHandler.cs
index 97f76bddd09e..7dd18e19f5c9 100644
--- a/sdk/entra/Microsoft.Azure.WebJobs.Extensions.AuthenticationEvents/src/AuthenticationEventResponseHandler.cs
+++ b/sdk/entra/Microsoft.Azure.WebJobs.Extensions.AuthenticationEvents/src/AuthenticationEventResponseHandler.cs
@@ -227,10 +227,7 @@ internal static AuthenticationEventJsonElement GetJsonObjectFromString(string re
         {
             try
             {
-                if (!Helpers.IsJson(result))
-                {
-                    throw new ResponseValidationException(AuthenticationEventResource.Ex_Invalid_Return);
-                }
+                Helpers.ValidateJson(result);
             }
             catch (JsonException ex)
             {
diff --git a/sdk/entra/Microsoft.Azure.WebJobs.Extensions.AuthenticationEvents/src/Helpers.cs b/sdk/entra/Microsoft.Azure.WebJobs.Extensions.AuthenticationEvents/src/Helpers.cs
index 0bfcafc94b30..5d6c0949eeb6 100644
--- a/sdk/entra/Microsoft.Azure.WebJobs.Extensions.AuthenticationEvents/src/Helpers.cs
+++ b/sdk/entra/Microsoft.Azure.WebJobs.Extensions.AuthenticationEvents/src/Helpers.cs
@@ -108,19 +108,16 @@ internal static HttpResponseMessage HttpJsonResponse(AuthenticationEventJsonElem
 
         /// <summary>Determines whether the specified input is json.</summary>
         /// <param name="input">The input.</param>
-        /// <returns>
-        ///   <c>true</c> if the specified input is json; otherwise, <c>false</c>.</returns>
-        internal static bool IsJson(string input)
+        internal static void ValidateJson(string input)
         {
             if (string.IsNullOrEmpty(input))
             {
-                return false;
+                throw new JsonException(AuthenticationEventResource.Ex_Empty_Json);
             }
 
-			// try parsing input to json object
-			using var _ = JsonDocument.Parse(input);
-			return true;
-		}
+            // try parsing input to json object
+            using var _ = JsonDocument.Parse(input);
+        }
 
         internal static AuthenticationEventAction GetEventActionForActionType(string actionType)
         {
diff --git a/sdk/entra/Microsoft.Azure.WebJobs.Extensions.AuthenticationEvents/tests/AuthenticationEventBindingTests.cs b/sdk/entra/Microsoft.Azure.WebJobs.Extensions.AuthenticationEvents/tests/AuthenticationEventBindingTests.cs
index ae13eda877ea..4dda66d0a13e 100644
--- a/sdk/entra/Microsoft.Azure.WebJobs.Extensions.AuthenticationEvents/tests/AuthenticationEventBindingTests.cs
+++ b/sdk/entra/Microsoft.Azure.WebJobs.Extensions.AuthenticationEvents/tests/AuthenticationEventBindingTests.cs
@@ -33,7 +33,7 @@ private static IEnumerable<object[]> TestPayloadScenarios()
             {
                 Test = string.Empty,
                 Message = "Testing request without payload throws an error",
-                ExceptionMessage = "Invalid Json Payload"
+                ExceptionMessage = "Invalid Json Payload: JSON is null or empty."
             }.ToArray;
             yield return new TestCaseStructure()
             {
diff --git a/sdk/entra/Microsoft.Azure.WebJobs.Extensions.AuthenticationEvents/tests/PayloadTests.cs b/sdk/entra/Microsoft.Azure.WebJobs.Extensions.AuthenticationEvents/tests/PayloadTests.cs
index d015017052da..f742fe2d0f4c 100644
--- a/sdk/entra/Microsoft.Azure.WebJobs.Extensions.AuthenticationEvents/tests/PayloadTests.cs
+++ b/sdk/entra/Microsoft.Azure.WebJobs.Extensions.AuthenticationEvents/tests/PayloadTests.cs
@@ -64,7 +64,7 @@ public async Task Tests(TestTypes testType)
                 case TestTypes.NoAction:
                     return (Payloads.TokenIssuanceStart.TokenIssuanceStart.NoActionResponse, @"{'errors':['No Actions Found. Please supply atleast one action.']}", HttpStatusCode.InternalServerError);
                 case TestTypes.Empty:
-                    return (string.Empty, @"{'errors':['Return type is invalid, please return either an AuthEventResponse, HttpResponse, HttpResponseMessage or string in your function return.']}", HttpStatusCode.InternalServerError);
+                    return (string.Empty, @"{'errors':['Return type is invalid, please return either an AuthEventResponse, HttpResponse, HttpResponseMessage or string in your function return: JSON is null or empty.']}", HttpStatusCode.InternalServerError);
                 case TestTypes.ValidCloudEvent:
                     return (Payloads.TokenIssuanceStart.TokenIssuanceStart.ActionResponse, Payloads.TokenIssuanceStart.TokenIssuanceStart.ExpectedPayload, HttpStatusCode.OK);
                 default:
diff --git a/sdk/entra/Microsoft.Azure.WebJobs.Extensions.AuthenticationEvents/tests/Payloads/TokenIssuanceStart/NullResponse.json b/sdk/entra/Microsoft.Azure.WebJobs.Extensions.AuthenticationEvents/tests/Payloads/TokenIssuanceStart/NullResponse.json
index bfa3fc136c4a..485c54513fcb 100644
--- a/sdk/entra/Microsoft.Azure.WebJobs.Extensions.AuthenticationEvents/tests/Payloads/TokenIssuanceStart/NullResponse.json
+++ b/sdk/entra/Microsoft.Azure.WebJobs.Extensions.AuthenticationEvents/tests/Payloads/TokenIssuanceStart/NullResponse.json
@@ -1,3 +1,3 @@
 {
-  "errors": [ "Return type is invalid, please return either an AuthEventResponse, HttpResponse, HttpResponseMessage or string in your function return." ]
+  "errors": [ "Return type is invalid, please return either an AuthEventResponse, HttpResponse, HttpResponseMessage or string in your function return" ]
 }
diff --git a/sdk/entra/Microsoft.Azure.WebJobs.Extensions.AuthenticationEvents/tests/ResponseTypesTests.cs b/sdk/entra/Microsoft.Azure.WebJobs.Extensions.AuthenticationEvents/tests/ResponseTypesTests.cs
index e752b0ef7a00..3bca59bf1117 100644
--- a/sdk/entra/Microsoft.Azure.WebJobs.Extensions.AuthenticationEvents/tests/ResponseTypesTests.cs
+++ b/sdk/entra/Microsoft.Azure.WebJobs.Extensions.AuthenticationEvents/tests/ResponseTypesTests.cs
@@ -98,7 +98,7 @@ private object GetResponseTypeObject(ResponseTypes responseType, StreamWriter st
                 case ResponseTypes.AuthEventResponse:
                     return (code: HttpStatusCode.OK, Payloads.TokenIssuanceStart.TokenIssuanceStart.ActionResponse);
                 case ResponseTypes.Unknown:
-                    return (code: HttpStatusCode.InternalServerError, @"{'errors':['Return type is invalid, please return either an AuthEventResponse, HttpResponse, HttpResponseMessage or string in your function return.']}");
+                    return (code: HttpStatusCode.InternalServerError, @"{'errors':['Return type is invalid, please return either an AuthEventResponse, HttpResponse, HttpResponseMessage or string in your function return']}");
                 default:
                     return (code: HttpStatusCode.BadRequest, string.Empty);
             };