diff --git a/windows/client-management/mdm/policy-csp-smartscreen.md b/windows/client-management/mdm/policy-csp-smartscreen.md
index 61a11806fa..ee2e01759b 100644
--- a/windows/client-management/mdm/policy-csp-smartscreen.md
+++ b/windows/client-management/mdm/policy-csp-smartscreen.md
@@ -73,6 +73,9 @@ manager: dansimp
 <!--Description-->
 Added in Windows 10, version 1703. Allows IT Admins to control whether users are allowed to install apps from places other than the Store.
 
+> [!Note]
+> This policy will block installation only while the device is online. To block offline installation too, policies **SmartScreen/PreventOverrideForFilesInShell** and **SmartScreen/EnableSmartScreenInShell**  should also be enabled.
+
 <!--/Description-->
 <!--ADMXMapped-->
 ADMX Info: