diff --git a/windows/security/application-security/application-control/windows-defender-application-control/applocker/applocker-overview.md b/windows/security/application-security/application-control/windows-defender-application-control/applocker/applocker-overview.md
index eaf509458d..7c130ac1f2 100644
--- a/windows/security/application-security/application-control/windows-defender-application-control/applocker/applocker-overview.md
+++ b/windows/security/application-security/application-control/windows-defender-application-control/applocker/applocker-overview.md
@@ -4,6 +4,7 @@ description: This article provides a description of AppLocker and can help you d
 ms.collection:
 - highpri
 - tier3
+- must-keep
 ms.topic: conceptual
 ms.localizationpriority: medium
 ms.date: 06/07/2023
diff --git a/windows/security/application-security/application-control/windows-defender-application-control/design/microsoft-recommended-driver-block-rules.md b/windows/security/application-security/application-control/windows-defender-application-control/design/microsoft-recommended-driver-block-rules.md
index a190d84898..d38b2eff55 100644
--- a/windows/security/application-security/application-control/windows-defender-application-control/design/microsoft-recommended-driver-block-rules.md
+++ b/windows/security/application-security/application-control/windows-defender-application-control/design/microsoft-recommended-driver-block-rules.md
@@ -5,6 +5,7 @@ ms.localizationpriority: medium
 ms.collection:
 - highpri
 - tier3
+- must-keep
 ms.date: 06/06/2023
 ms.topic: article
 ---
diff --git a/windows/security/application-security/application-control/windows-defender-application-control/wdac.md b/windows/security/application-security/application-control/windows-defender-application-control/wdac.md
index 7ee7a13013..42fb2e18d7 100644
--- a/windows/security/application-security/application-control/windows-defender-application-control/wdac.md
+++ b/windows/security/application-security/application-control/windows-defender-application-control/wdac.md
@@ -5,6 +5,7 @@ ms.localizationpriority: medium
 ms.collection:
 - highpri
 - tier3
+- must-keep
 ms.date: 04/06/2023
 ms.topic: article
 ---
diff --git a/windows/security/docfx.json b/windows/security/docfx.json
index 48559f1650..20fa610bfa 100644
--- a/windows/security/docfx.json
+++ b/windows/security/docfx.json
@@ -224,7 +224,7 @@
         "operating-system-security/device-management/windows-security-configuration-framework/*.md": "jmunck"
       },
       "ms.collection": {
-        "application-security/application-control/windows-defender-application-control/**/*.md": "tier3",
+        "application-security/application-control/windows-defender-application-control/**/*.md": [ "tier3", "must-keep" ],
         "identity-protection/hello-for-business/*.md": "tier1",
         "information-protection/pluton/*.md": "tier1",
         "information-protection/tpm/*.md": "tier1",