diff --git a/windows/security/threat-protection/windows-defender-antivirus/configure-extension-file-exclusions-windows-defender-antivirus.md b/windows/security/threat-protection/windows-defender-antivirus/configure-extension-file-exclusions-windows-defender-antivirus.md
index 78351fac00..492af0b7b7 100644
--- a/windows/security/threat-protection/windows-defender-antivirus/configure-extension-file-exclusions-windows-defender-antivirus.md
+++ b/windows/security/threat-protection/windows-defender-antivirus/configure-extension-file-exclusions-windows-defender-antivirus.md
@@ -24,6 +24,9 @@ You can exclude certain files from Windows Defender Antivirus scans by modifying
 
 Generally, you shouldn't need to apply exclusions. Windows Defender Antivirus includes a number of automatic exclusions based on known operating system behaviors and typical management files, such as those used in enterprise management, database management, and other enterprise scenarios and situations.
 
+> [!NOTE]
+> Automatic exclusions apply only to Windows Server 2016 and above. 
+
 >[!TIP]
 >The default antimalware policy we deploy at Microsoft doesn't set any exclusions by default.