Update tvm-security-baselines.md

Author: siosulli

defender-vulnerability-management/tvm-security-baselines.md

@@ -38,6 +38,9 @@ Security baselines provide support for Center for Internet Security (**CIS)** be
 > [!TIP]
 > Did you know you can try all the features in Microsoft Defender Vulnerability Management for free? Find out how to [sign up for a free trial](defender-vulnerability-management-trial.md).
 
+> [!NOTE]
+> Security baseline assessment is not supported when DFSS (Dynamic Fair Share Scheduling) is enabled on Windows Server 2012 R2.
+
 ## Get started with security baselines assessment
 
 1. Go to **Vulnerability management** > **Baselines assessment** in the [Microsoft Defender portal](https://security.microsoft.com).