Update concept-customer-managed-keys.md

Author: deeikele

articles/machine-learning/concept-customer-managed-keys.md

@@ -132,9 +132,9 @@ Set the `enableServiceSideCMKEncryption` when you create a workspace to opt-in f
 | Hub | No |
 | Project | No |
 
-
 > [!NOTE]
 > During this preview key rotation and data labeling capabilities are not supported.
+> Server-side encryption is currently not supported in combination with an Azure Key Vault that has public network access disabled.
 
 For a template that creates a workspace with service-side encryption of metadata, see [https://github.com/azure/azure-quickstart-templates/tree/master/quickstarts/microsoft.machinelearningservices/machine-learning-workspace-cmk-service-side-encryption](https://github.com/azure/azure-quickstart-templates/tree/master/quickstarts/microsoft.machinelearningservices/machine-learning-workspace-cmk-service-side-encryption).