asp.net core deployment on IIS - HTTP Error 500.30 - ANCM In-Process Start Failure

Question

I have a problem with my site up and running on windows server with IIS On my local machine everything works fine with Visual Studio 2019.

Its a ASP.NET Core MVC Web Application. When I select publish to the local folder and upload everything to the server and create the website in IIS and try to run, I get this error:

HTTP Error 500.30 - ANCM In-Process Start Failure

on the event viewer I have this error:

Application '/LM/W3SVC/12/ROOT' with physical root 'c:\Webs\mynetcoremvc\' failed to load coreclr. Exception message:
CLR worker thread exited prematurely

//note: I have another ASP.NET Core API application running on the server without any problem. Both version 3.1.0

Could you please share your IIS web site's folder structure and details web.config setting? Is the asp,net core application publish mode is self-contained or Farmework-depend? It seems that there is something wrong with the setting, — Brando Zhang

JEuvin JEuvin · Accepted Answer · 2020-09-14T06:31:48

Your startup.cs is throwing an error. Need to figure out what it is and it will solve that issue. Mine was due to KeyVault authorization issues.

asp.net core deployment on IIS - HTTP Error 500.30 - ANCM In-Process Start Failure

1 Answers