diff --git a/windows/security/threat-protection/TOC.md b/windows/security/threat-protection/TOC.md
index bc438bb6f6..a3ef36d122 100644
--- a/windows/security/threat-protection/TOC.md
+++ b/windows/security/threat-protection/TOC.md
@@ -292,7 +292,7 @@
 ######## [Run antivirus scan](windows-defender-atp/run-av-scan-windows-defender-advanced-threat-protection-new.md)
 ######## [Offboard machine](windows-defender-atp/offboard-machine-api-windows-defender-advanced-threat-protection-new.md)
 ######## [Stop and quarantine file](windows-defender-atp/stop-and-quarantine-file-windows-defender-advanced-threat-protection-new.md)
-######## [Initiate investigation](windows-defender-atp/initiate-autoir-investigation-windows-defender-advanced-threat-protection-new.md)
+######## [Initiate investigation (preview)](windows-defender-atp/initiate-autoir-investigation-windows-defender-advanced-threat-protection-new.md)
 
 ####### [User](windows-defender-atp/user-windows-defender-advanced-threat-protection-new.md)
 ######## [Get user related alerts](windows-defender-atp/get-user-related-alerts-windows-defender-advanced-threat-protection-new.md)
diff --git a/windows/security/threat-protection/windows-defender-atp/TOC.md b/windows/security/threat-protection/windows-defender-atp/TOC.md
index 572beeaa89..662a44c8e1 100644
--- a/windows/security/threat-protection/windows-defender-atp/TOC.md
+++ b/windows/security/threat-protection/windows-defender-atp/TOC.md
@@ -288,7 +288,7 @@
 ####### [Run antivirus scan](run-av-scan-windows-defender-advanced-threat-protection-new.md)
 ####### [Offboard machine](offboard-machine-api-windows-defender-advanced-threat-protection-new.md)
 ####### [Stop and quarantine file](stop-and-quarantine-file-windows-defender-advanced-threat-protection-new.md)
-####### [Initiate investigation](initiate-autoir-investigation-windows-defender-advanced-threat-protection-new.md)
+####### [Initiate investigation (preview)](initiate-autoir-investigation-windows-defender-advanced-threat-protection-new.md)
 
 ###### [User](user-windows-defender-advanced-threat-protection-new.md)
 ####### [Get user related alerts](get-user-related-alerts-windows-defender-advanced-threat-protection-new.md)
diff --git a/windows/security/threat-protection/windows-defender-atp/initiate-autoir-investigation-windows-defender-advanced-threat-protection-new.md b/windows/security/threat-protection/windows-defender-atp/initiate-autoir-investigation-windows-defender-advanced-threat-protection-new.md
index 8ec922cb8b..7e91cf5285 100644
--- a/windows/security/threat-protection/windows-defender-atp/initiate-autoir-investigation-windows-defender-advanced-threat-protection-new.md
+++ b/windows/security/threat-protection/windows-defender-atp/initiate-autoir-investigation-windows-defender-advanced-threat-protection-new.md
@@ -16,7 +16,7 @@ ms.collection: M365-security-compliance
 ms.topic: article
 ---
 
-# Initiate machine investigation API
+# Initiate machine investigation API (Preview)
 **Applies to:**
 - [Windows Defender Advanced Threat Protection (Windows Defender ATP)](https://go.microsoft.com/fwlink/p/?linkid=2069559)