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+---
+title: Troubleshoot custom threat intelligence issues in Windows Defender ATP
+description: Troubleshoot issues that might arise when using the custom threat intelligence feature in Windows Defender ATP.
+keywords: troubleshoot, custom threat intelligence, custom ti, rest api, api, alert definitions, indicators of compromise
+search.product: eADQiWindows 10XVcnh
+ms.prod: w10
+ms.mktglfcycl: deploy
+ms.sitesec: library
+ms.pagetype: security
+author: mjcaparas
+localizationpriority: high
+---
+
+# Troubleshoot custom threat intelligence issues
+
+**Applies to:**
+
+- Windows 10 Enterprise
+- Windows 10 Education
+- Windows 10 Pro
+- Windows 10 Pro Education
+- Windows Defender Advanced Threat Protection (Windows Defender ATP)
+
+<span style="color:#ED1C24;">[Some information relates to pre-released product, which may be substantially modified before it's commercially released. Microsoft makes no warranties, express or implied, with respect to the information provided here.]</span>
+
+You might need to troubleshoot issues while using the custom threat intelligence feature.
+
+This page provides detailed steps to troubleshoot issues you might encounter while using the feature.
+
+
+## Learn how to get a new client secret
+If your client secret expires or if you've misplaced the copy provided when you were enabling the custom threat intelligence application,  you'll need to get a new secret.
+
+1. Login to the [Azure management portal](https://ms.portal.azure.com).
+
+2. Select **Active Directory**.
+
+3. Select your tenant.
+
+4. Click **Application**, then select your custom threat intelligence application.
+
+5. Select **Keys** section, then provide a key description and specify the key validity duration.
+
+6. Click **Save**. The key value is displayed.
+
+7. Copy the value and save it in a safe place.