diff --git a/api/v1beta1/azuremanagedcluster_webhook.go b/api/v1beta1/azuremanagedcluster_webhook.go
index a6cbd98d43b..0db03ba4544 100644
--- a/api/v1beta1/azuremanagedcluster_webhook.go
+++ b/api/v1beta1/azuremanagedcluster_webhook.go
@@ -38,7 +38,7 @@ func (r *AzureManagedCluster) SetupWebhookWithManager(mgr ctrl.Manager) error {
 		Complete()
 }
 
-// +kubebuilder:webhook:verbs=update,path=/validate-infrastructure-cluster-x-k8s-io-v1beta1-azuremanagedcluster,mutating=false,failurePolicy=fail,groups=infrastructure.cluster.x-k8s.io,resources=azuremanagedclusters,versions=v1beta1,name=validation.azuremanagedclusters.infrastructure.cluster.x-k8s.io,sideEffects=None,admissionReviewVersions=v1;v1beta1
+// +kubebuilder:webhook:verbs=create;update,path=/validate-infrastructure-cluster-x-k8s-io-v1beta1-azuremanagedcluster,mutating=false,failurePolicy=fail,groups=infrastructure.cluster.x-k8s.io,resources=azuremanagedclusters,versions=v1beta1,name=validation.azuremanagedclusters.infrastructure.cluster.x-k8s.io,sideEffects=None,admissionReviewVersions=v1;v1beta1
 
 var _ webhook.Validator = &AzureManagedCluster{}
 
diff --git a/api/v1beta1/azuremanagedmachinepool_webhook.go b/api/v1beta1/azuremanagedmachinepool_webhook.go
index 7eee9517b2e..52a3531bf38 100644
--- a/api/v1beta1/azuremanagedmachinepool_webhook.go
+++ b/api/v1beta1/azuremanagedmachinepool_webhook.go
@@ -59,7 +59,7 @@ func (m *AzureManagedMachinePool) Default(client client.Client) {
 	}
 }
 
-//+kubebuilder:webhook:verbs=update;delete,path=/validate-infrastructure-cluster-x-k8s-io-v1beta1-azuremanagedmachinepool,mutating=false,failurePolicy=fail,matchPolicy=Equivalent,groups=infrastructure.cluster.x-k8s.io,resources=azuremanagedmachinepools,versions=v1beta1,name=validation.azuremanagedmachinepools.infrastructure.cluster.x-k8s.io,sideEffects=None,admissionReviewVersions=v1;v1beta1
+//+kubebuilder:webhook:verbs=create;update;delete,path=/validate-infrastructure-cluster-x-k8s-io-v1beta1-azuremanagedmachinepool,mutating=false,failurePolicy=fail,matchPolicy=Equivalent,groups=infrastructure.cluster.x-k8s.io,resources=azuremanagedmachinepools,versions=v1beta1,name=validation.azuremanagedmachinepools.infrastructure.cluster.x-k8s.io,sideEffects=None,admissionReviewVersions=v1;v1beta1
 
 // ValidateCreate implements webhook.Validator so a webhook will be registered for the type.
 func (m *AzureManagedMachinePool) ValidateCreate(client client.Client) error {
@@ -310,13 +310,12 @@ func (m *AzureManagedMachinePool) validateOSType() error {
 }
 
 func (m *AzureManagedMachinePool) validateName() error {
-	if m.Spec.OSType != nil && *m.Spec.OSType == WindowsOS {
-		if len(m.Name) > 6 {
-			return field.Invalid(
-				field.NewPath("Name"),
-				m.Name,
-				"Windows agent pool name can not be longer than 6 characters.")
-		}
+	if m.Spec.OSType != nil && *m.Spec.OSType == WindowsOS &&
+		m.Spec.Name != nil && len(*m.Spec.Name) > 6 {
+		return field.Invalid(
+			field.NewPath("Spec", "Name"),
+			m.Spec.Name,
+			"Windows agent pool name can not be longer than 6 characters.")
 	}
 
 	return nil
diff --git a/api/v1beta1/azuremanagedmachinepool_webhook_test.go b/api/v1beta1/azuremanagedmachinepool_webhook_test.go
index 5970397a4ca..263df698025 100644
--- a/api/v1beta1/azuremanagedmachinepool_webhook_test.go
+++ b/api/v1beta1/azuremanagedmachinepool_webhook_test.go
@@ -640,10 +640,8 @@ func TestAzureManagedMachinePool_ValidateCreate(t *testing.T) {
 		{
 			name: "Windows clusters with more than 6char names are not allowed",
 			ammp: &AzureManagedMachinePool{
-				ObjectMeta: metav1.ObjectMeta{
-					Name: "pool0-name-too-long",
-				},
 				Spec: AzureManagedMachinePoolSpec{
+					Name:   pointer.String("pool0-name-too-long"),
 					Mode:   "User",
 					OSType: pointer.String(WindowsOS),
 				},
diff --git a/config/webhook/manifests.yaml b/config/webhook/manifests.yaml
index 5b81638d0c3..90a8fe4a8c8 100644
--- a/config/webhook/manifests.yaml
+++ b/config/webhook/manifests.yaml
@@ -290,6 +290,7 @@ webhooks:
     apiVersions:
     - v1beta1
     operations:
+    - CREATE
     - UPDATE
     resources:
     - azuremanagedclusters
@@ -332,6 +333,7 @@ webhooks:
     apiVersions:
     - v1beta1
     operations:
+    - CREATE
     - UPDATE
     - DELETE
     resources: