Problem running 4.0

Hi,
I'm trying to run an out of the box webbased installation, but the folloqwing error happens:


HTTP Error 500.19 - Internal Server Error

The requested page cannot be accessed because the related configuration data for the page is invalid.

Detailed Error Information

Module
IIS Web Core

Notification
BeginRequest

Handler
Not yet determined

Error Code
0x8007000d

Config Error


Config File
\\?\D:\Web\nopFritaly400\web.config



Requested URL
http://sylogic1.zucchetti.com:80/nopfritaly400/

Physical Path
D:\Web\nopFritaly400\

Logon Method
Not yet determined

Logon User
Not yet determined



Config Source    -1:
    0:

What's wrong?

Hi infinito62,

You need install .NET Core Windows Server hosting runtime then restart IIS.

Read more:
http://docs.nopcommerce.com/pages/viewpage.action?pageId=10256757

Yes, thank you, I found posts about and solved.
I have another problem: upgraded db from 3.90 and copied settings.txt, nopcommerce runs installation process rather than working site.
DO you know why?

4.00 is now using .json files  (not .txt files)

infinito62 wrote:
As mentioned above, nop 4.0 uses .json instead of .txt, so you need to edit the dataSettings.json file (App_Data/dataSettings.json).

Tahank you, I found syntax here https://www.nopcommerce.com/boards/t/49400/how-should-the-datasettingsjson-look-now.aspx, but now I have the following error  

An error occurred while starting the application.

.NET Framework 4.7.2558.0 X86 v4.0.0.0    |   Microsoft.AspNetCore.Hosting version 2.0.0-rtm-26452    |    Microsoft Windows 6.1.7601 S    |   Need help?

Do you know what's wrong now?

infinito62 wrote:
This is a general message, you can find the detailed error message in log file.

Which log file? Where is it?
Sorry, but 4.0 is a nightmare, there's no documentation at all, it's incredible and frustrating. I use web based, I'm not a VS developer

Please set stdoutLogEnabled="true" (in web.config) then restart IIS and run website, you can find log file in Logs folder.

After 3 hours I still cannot get this to run. I have installed and checked .NetCore SDK is running, the site is running on IIS 10, I have tried setting the stdoutLogEnabled="true" in the web.config file, but still nothing appears in the /Logs/stdout, all I have is a 500 error page that I just cannot get past. Can anyone help? Thset up instructions for version 4.0 also tell em to change permissions for files / folders that do not exist in the No Source download. Should I have all these DLL files in the root directory? Is that part of the .NET Core system and the way it runs?