diff --git a/windows/client-management/mdm/policy-csp-defender.md b/windows/client-management/mdm/policy-csp-defender.md
index 79fe896cdf..dcea40a888 100644
--- a/windows/client-management/mdm/policy-csp-defender.md
+++ b/windows/client-management/mdm/policy-csp-defender.md
@@ -2313,6 +2313,9 @@ ADMX Info:
 
 Added in Windows 10, version 1607. Specifies the level of detection for potentially unwanted applications (PUAs). Windows Defender alerts you when potentially unwanted software is being downloaded or attempts to install itself on your computer.
 
+> [!NOTE]
+> Potentially unwanted applications (PUA) are a category of software that can cause your machine to run slowly, display unexpected ads, or at worst, install other software which might be unexpected or unwanted. By default in Windows 10 (version 2004 and later), Microsoft Defender Antivirus blocks apps that are considered PUA, for Enterprise (E5) devices. For more information about PUA, see [Detect and block potentially unwanted applications](https://docs.microsoft.com/windows/security/threat-protection/microsoft-defender-antivirus/detect-block-potentially-unwanted-apps-microsoft-defender-antivirus).
+
 <!--/Description-->
 <!--SupportedValues-->
 The following list shows the supported values: