Update controlled-folders.md

windows/security/threat-protection/microsoft-defender-atp/controlled-folders.md

@@ -11,7 +11,7 @@ ms.localizationpriority: medium
 author: denisebmsft
 ms.author: deniseb
 audience: ITPro
-ms.date: 11/05/2020
+ms.date: 12/10/2020
 ms.reviewer: v-maave
 manager: dansimp
 ms.custom: asr
@@ -44,6 +44,19 @@ Controlled folder access is especially useful in helping to protect your documen
 
 The protected folders include common system folders (including boot sectors), and you can [add additional folders](customize-controlled-folders.md#protect-additional-folders). You can also [allow apps](customize-controlled-folders.md#allow-specific-apps-to-make-changes-to-controlled-folders) to give them access to the protected folders.
 
+By default, the following Windows system folders are protected:  
+- `c:\Users\<username>\Documents`
+- `c:\Users\Public\Documents`
+- `c:\Users\<username>\Pictures`
+- `c:\Users\Public\Pictures`
+- `c:\Users\Public\Videos`
+- `c:\Users\<username>\Music`
+- `c:\Users\Public\Music`
+- `c:\Users\<username>\Favorites`
+
+> [!NOTE]
+> You cannot remove the Windows system folders that are protected by default.
+
 You can use [audit mode](audit-windows-defender.md) to evaluate how controlled folder access would impact your organization if it were enabled. You can also visit the Windows Defender Test ground website at [demo.wd.microsoft.com](https://demo.wd.microsoft.com?ocid=cx-wddocs-testground) to confirm the feature is working and see how it works.
 
 Controlled folder access is supported on Windows 10, version 1709 and later and Windows Server 2019.