diff --git a/windows/security/threat-protection/windows-defender-antivirus/microsoft-defender-atp-mac.md b/windows/security/threat-protection/windows-defender-antivirus/microsoft-defender-atp-mac.md
index f643a3b454..cccde77573 100644
--- a/windows/security/threat-protection/windows-defender-antivirus/microsoft-defender-atp-mac.md
+++ b/windows/security/threat-protection/windows-defender-antivirus/microsoft-defender-atp-mac.md
@@ -31,9 +31,13 @@ You should have beginner-level experience in macOS and BASH scripting. You must
 You should also have access to Windows Defender Security Center.
 
 ### System Requirements
-Microsoft Defender ATP for Mac system requirements:
 - macOS version: 10.14 (Mojave), 10.13 (High Sierra), 10.12 (Sierra)
-- Disk space during preview: 1GB 
+- Disk space during preview: 1GB
+
+Beta versions of macOS are not supported.
+
+> [!CAUTION]
+> Running other third-party endpoint protection along with Microsoft Defender ATP for Mac may lead to performance problems and unpredictable side effects.
 
 After you've enabled the service, you may need to configure your network or firewall to allow outbound connections between it and your endpoints.