diff --git a/python/az/aro/azext_aro/_validators.py b/python/az/aro/azext_aro/_validators.py
index 96b8941323a..34b1435cc75 100644
--- a/python/az/aro/azext_aro/_validators.py
+++ b/python/az/aro/azext_aro/_validators.py
@@ -284,6 +284,8 @@ def validate_refresh_cluster_credentials(namespace):
         return
     if namespace.client_secret is not None or namespace.client_id is not None:
         raise RequiredArgumentMissingError('--client-id and --client-secret must be not set with --refresh-credentials.')  # pylint: disable=line-too-long
+    if namespace.platform_workload_identities is not None:
+        raise MutuallyExclusiveArgumentError('--platform-workload-identities must be not set with --refresh-credentials.')  # pylint: disable=line-too-long
     if namespace.upgradeable_to is not None:
         raise MutuallyExclusiveArgumentError('Must not specify --refresh-credentials when --upgradeable-to is used.')  # pylint: disable=line-too-long
 
diff --git a/python/az/aro/azext_aro/tests/latest/unit/test_validators.py b/python/az/aro/azext_aro/tests/latest/unit/test_validators.py
index 0df05cf9c94..3fce1c5a546 100644
--- a/python/az/aro/azext_aro/tests/latest/unit/test_validators.py
+++ b/python/az/aro/azext_aro/tests/latest/unit/test_validators.py
@@ -815,9 +815,14 @@ def test_validate_worker_vm_disk_size_gb(test_description, namespace, expected_e
         Mock(client_id="client_id_456"),
         RequiredArgumentMissingError
     ),
+    (
+        "should raise MutuallyExclusiveArgumentError Exception because namespace.platform_workload_identities is present",
+        Mock(platform_workload_identities=[Mock(resource_id='Foo')], client_id=None, client_secret=None),
+        MutuallyExclusiveArgumentError
+    ),
     (
         "should not raise any Exception because namespace.client_secret is None and namespace.client_id is None",
-        Mock(upgradeable_to=None, client_secret=None, client_id=None),
+        Mock(upgradeable_to=None, client_secret=None, client_id=None, platform_workload_identities=None),
         None
     ),
     (