diff --git a/azure-mgmt-containerservice/azure/mgmt/containerservice/models/managed_cluster_aad_profile.py b/azure-mgmt-containerservice/azure/mgmt/containerservice/models/managed_cluster_aad_profile.py
index 50e3acd14b60..6a48639de342 100644
--- a/azure-mgmt-containerservice/azure/mgmt/containerservice/models/managed_cluster_aad_profile.py
+++ b/azure-mgmt-containerservice/azure/mgmt/containerservice/models/managed_cluster_aad_profile.py
@@ -21,7 +21,7 @@ class ManagedClusterAADProfile(Model):
     :type client_app_id: str
     :param server_app_id: Required. The server AAD application ID.
     :type server_app_id: str
-    :param server_app_secret: Required. The server AAD application secret.
+    :param server_app_secret: The server AAD application secret.
     :type server_app_secret: str
     :param tenant_id: The AAD tenant ID to use for authentication. If not
      specified, will use the tenant of the deployment subscription.
@@ -31,7 +31,6 @@ class ManagedClusterAADProfile(Model):
     _validation = {
         'client_app_id': {'required': True},
         'server_app_id': {'required': True},
-        'server_app_secret': {'required': True},
     }
 
     _attribute_map = {
diff --git a/azure-mgmt-containerservice/azure/mgmt/containerservice/models/managed_cluster_aad_profile_py3.py b/azure-mgmt-containerservice/azure/mgmt/containerservice/models/managed_cluster_aad_profile_py3.py
index 6db15c1dd6c2..76289f3ddc3f 100644
--- a/azure-mgmt-containerservice/azure/mgmt/containerservice/models/managed_cluster_aad_profile_py3.py
+++ b/azure-mgmt-containerservice/azure/mgmt/containerservice/models/managed_cluster_aad_profile_py3.py
@@ -21,7 +21,7 @@ class ManagedClusterAADProfile(Model):
     :type client_app_id: str
     :param server_app_id: Required. The server AAD application ID.
     :type server_app_id: str
-    :param server_app_secret: Required. The server AAD application secret.
+    :param server_app_secret: The server AAD application secret.
     :type server_app_secret: str
     :param tenant_id: The AAD tenant ID to use for authentication. If not
      specified, will use the tenant of the deployment subscription.
@@ -31,7 +31,6 @@ class ManagedClusterAADProfile(Model):
     _validation = {
         'client_app_id': {'required': True},
         'server_app_id': {'required': True},
-        'server_app_secret': {'required': True},
     }
 
     _attribute_map = {
@@ -41,7 +40,7 @@ class ManagedClusterAADProfile(Model):
         'tenant_id': {'key': 'tenantID', 'type': 'str'},
     }
 
-    def __init__(self, *, client_app_id: str, server_app_id: str, server_app_secret: str, tenant_id: str=None, **kwargs) -> None:
+    def __init__(self, *, client_app_id: str, server_app_id: str, server_app_secret: str=None, tenant_id: str=None, **kwargs) -> None:
         super(ManagedClusterAADProfile, self).__init__(**kwargs)
         self.client_app_id = client_app_id
         self.server_app_id = server_app_id
diff --git a/azure-mgmt-containerservice/azure/mgmt/containerservice/version.py b/azure-mgmt-containerservice/azure/mgmt/containerservice/version.py
index c215e51b49fe..204d7f82b78a 100644
--- a/azure-mgmt-containerservice/azure/mgmt/containerservice/version.py
+++ b/azure-mgmt-containerservice/azure/mgmt/containerservice/version.py
@@ -9,5 +9,5 @@
 # regenerated.
 # --------------------------------------------------------------------------
 
-VERSION = "4.2.2"
+VERSION = "4.1.0"