Merge pull request #10413 from MicrosoftDocs/main

Auto Publish – main to live - 2025-12-19 18:00 UTC

Author: learn-build-service-prod[bot]

support/azure/app-service/asp-net-core-apps-stop-responding.md

@@ -0,0 +1,29 @@
+---
+title: ASP.NET Core applications hosted in App Service stop responding
+description: This article provides guidance on addressing ASP.NET Core applications that are hosted in Azure App Service when they stop responding. 
+author: JarrettRenshaw
+manager: dcscontentpm
+ms.topic: troubleshooting-general
+ms.date: 12/18/2025
+ms.author: jarrettr
+ms.reviewer: v-ryanberg
+ms.service: azure-app-service
+ms.custom: sap:Availability, Performance, and Application Issues
+---
+
+# ASP.NET Core applications hosted in App Service stop responding
+
+This article provides guidance on addressing ASP.NET Core applications that are hosted in Azure App Service when they stop responding. You might also see this message: "The specified CGI Application encountered an error and the server terminated the process."
+
+## Symptom
+
+ASP.NET Core applications that are hosted in App Service sometimes stop responding.
+
+## Cause
+
+A known issue with an earlier [Kestrel version](https://github.com/aspnet/KestrelHttpServer/issues/1182) might cause an ASP.NET Core 1.0 app that's hosted in App Service to intermittently stop responding.
+
+## Resolution
+
+This issue is fixed in Kestrel version 1.0.2. This version is included in the ASP.NET Core 1.0.3 update. To resolve this issue, make sure you update your app dependencies to use Kestrel 1.0.2. Alternatively, you can use one of two workarounds that are described in the blog post [ASP.NET Core 1.0 slow perf issues in App Service web apps](/archive/blogs/waws/asp-net-core-slow-perf-issues-on-azure-websites).
+

support/azure/app-service/toc.yml

@@ -17,6 +17,8 @@ items:
           href: ./capture-memory-dumps-app-service.md
         - name: Availability, performance, and application FAQs
           href: web-apps-performance-faqs.md
+        - name: ASP.NET Core applications hosted in App Service stop responding
+          href: asp-net-core-apps-stop-responding.md  
         - name: Error 403 - This web app is stopped message
           href: error-403-web-app-stopped-message.md  
         - name: Worker Process requested recycle due to Percent Memory limit message