diff --git a/source/_includes/common-tasks/network_storage.md b/source/_includes/common-tasks/network_storage.md
index 45e49c6df28..43b5cbb4baa 100644
--- a/source/_includes/common-tasks/network_storage.md
+++ b/source/_includes/common-tasks/network_storage.md
@@ -56,7 +56,7 @@ Server:
 "[NFS]<sup>1</sup> Remote share path":
   description: The path used to connect to the remote storage server.
 "[CIFS]<sup>2</sup> Username":
-  description: The username to use when connecting to the storage server.
+  description: The username to use when connecting to the storage server. Use User Principal Name for domain accounts. For example: `user@domain.com`.
 "[CIFS]<sup>2</sup> Password":
   description: The password to use when connecting to the storage server.
 "[CIFS]<sup>2</sup> Share":