diff --git a/windows/security/threat-protection/windows-defender-atp/TOC.md b/windows/security/threat-protection/windows-defender-atp/TOC.md
index 051be2140b..99c488848a 100644
--- a/windows/security/threat-protection/windows-defender-atp/TOC.md
+++ b/windows/security/threat-protection/windows-defender-atp/TOC.md
@@ -299,7 +299,7 @@
 #### [Misconfigured machines](fix-unhealhty-sensors-windows-defender-advanced-threat-protection.md#misconfigured-machines)
 ### [Review events and errors on machines with Event Viewer](event-error-codes-windows-defender-advanced-threat-protection.md)
  
-#### [Troubleshoot Windows Defender ATP service issues](troubleshoot-windows-defender-advanced-threat-protection.md)
+### [Troubleshoot Windows Defender ATP service issues](troubleshoot-windows-defender-advanced-threat-protection.md)
 #### [Check service health](service-status-windows-defender-advanced-threat-protection.md)
 
 ###Troubleshoot attack surface reduction
diff --git a/windows/security/threat-protection/windows-defender-atp/troubleshoot-wdatp.md b/windows/security/threat-protection/windows-defender-atp/troubleshoot-wdatp.md
index df9276ca6a..e03500b43d 100644
--- a/windows/security/threat-protection/windows-defender-atp/troubleshoot-wdatp.md
+++ b/windows/security/threat-protection/windows-defender-atp/troubleshoot-wdatp.md
@@ -13,11 +13,15 @@ ms.localizationpriority: high
 ms.date: 09/12/2018
 ---
 
-#  Troubleshoot Windows Defender Advanced Threat Protection capabilities
+#  Troubleshoot Windows Defender Advanced Threat Protection 
 
-Troubleshoot issues that might arise as you use Windows Defender Secur.
+Troubleshoot issues that might arise as you use Windows Defender ATP capabilities.
 
 ## In this section
+Topic | Description 
+:---|:---
+Troubleshoot sensor state | Find solutions for issues related to the Windows Defender ATP sensor
+Review events and errors on machines | Use Event viewer to view events and errors on machines
+Troubleshoot attack surface reduction | Fix issues related to network protection and attack surface reduction rules
+Troubleshoot next generation protection | If you encounter a problem with antivirus, you can search the tables in this topic to find a matching issue and potential solution
 
-[Troubleshoot Windows Defender Security Center](troubleshoot-windows-defender-advanced-threat-protection.md)| Find solutions to issues related to Windows Defender Security Center.
-[
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