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#500.37 ANCM FAILED TO START WITHIN STARTUP TIME LIMIT HOW TO#
#500.37 ANCM FAILED TO START WITHIN STARTUP TIME LIMIT MANUAL#

This error occurs within the app's code during startup or while creating a response. The app starts, but an error prevents the server from fulfilling the request. For more information on the web.config file, see ASP.NET Core Module (ANCM) for IIS.

Confirm that all of the app's files and folders are deployed by comparing the deployment on the hosting system to the contents of the project's publish folder.įor more information on the layout of a published ASP.NET Core app, see ASP.NET Core directory structure.

When the app is hosted by IIS, confirm that the app is deployed to the IIS Physical path shown in IIS Manager's Basic Settings.

When hosting on Azure App Service, confirm that the app is deployed to the D:\home\site\wwwroot folder.

Confirm that the web.config file is present in the deployment and that its contents are correct.

#500.37 ANCM FAILED TO START WITHIN STARTUP TIME LIMIT MANUAL#

Redeploy the contents of the app's publish folder to the hosting system using your normal method of deployment, such as Visual Studio, PowerShell, or manual deployment:.Delete all of the files and folders from the deployment folder on the hosting system.The web.config file is missing from the deployment, or the web.config file contents are malformed.The deployment process failed to move all of the app's files and folders to the deployment folder on the hosting system.The app is deployed to the wrong folder on the hosting system.The error is usually caused by a broken deployment on the hosting system, which includes any of the following scenarios: The following error is logged: The Web server is configured to not list the contents of this directory. A 502.5 - Process Failure or a 500.30 - Start Failure that occurs when debugging locally with IIS Express can be diagnosed using the advice in this topic. Visual studio can be configured to use IIS Express. In Visual Studio, the ASP.NET Core project default server is Kestrel.

The guidance applies to both Windows Server and Windows desktop deployments.Įxplains what to do when incoherent packages break an app when performing major upgrades or changing package versions. Provides troubleshooting advice for apps deployed to IIS or running on IIS Express locally. Provides troubleshooting advice for apps deployed to Azure App Service.

#500.37 ANCM FAILED TO START WITHIN STARTUP TIME LIMIT HOW TO#

This article provides information on common app startup errors and instructions on how to diagnose errors when an app is deployed to Azure App Service or IIS:Įxplains common startup HTTP status code scenarios.