HTTP Error 500.30 - ANCM In-Process Start Failure

I need help, to resolve the error:

HTTP Error 500.30 - ANCM In-Process Start Failure

My Blazor server-side application is working in Radzen and also in Visual Studio 2019. I have published the application to the folder from Visual Studio and copy to folder C:\inetpub\wwwroot. I have configured IIS in my win 10, but when browsing web site I got the following error.HTTP Error 500.30 - ANCM In-Process Start Failure. Simple Blazor application generated from VisualStudio server-side template browsing website without errors. I installed Dotnet-hosting-3.1.4.-win.exe on my desktop.
My application uses MS SQL Server Express database, EF, and a large number of pages.
Are there any specific options in IIS configuration regarding Radzen Blazor server-side applications?
Zoran Babic

Follow the steps mentioned here to manually deploy your application

Hello, I have deployed manually, from Visual Studio 2019. but the error is the same.

Hi @zorbabic ,

Make sure you have installed the right .NET Core hosting module for IIS. If your application is using .NET 5 then you should install .NET Core 5.0.8 runtime from here.

The problem of 500.30 is solved.
In the Application Pool of IIS (Local system) I have changed
Identity to Local System and put User name and Psw of my MSSQL EXPRESS
Thanks for support
Regards Zoran