HTTP Error 500.0 – ANCM In-Process Handler Load Failure Common causes of this issue:
The specified version of Microsoft.NetCore.App or Microsoft.AspNetCore.App was not found. The in process request handler, Microsoft.AspNetCore.Server.IIS, was not referenced in the application. ANCM could not find dotnet. Troubleshooting steps: Check the system event log for error messages Enable logging the application process’ stdout messages Attach a debugger to the application process and inspect.