How to add new Add Application on IIS with Nop 4.x?

Dear all,

I have a weird problem with Nop that i cannot add new Application(not virtual directory) on IIS  (with Physical Path completely outside the Nop app)  though it works fine that with pure .net core 2.x or 3.x projects.

Under the new application, i only add an image or a simple html, nothing else, I always get

http://domain.com/game/index.html  etc..

HTTP Error 502.5 - Process Failure

Common causes of this issue:
The application process failed to start
The application process started but then stopped
The application process started but failed to listen on the configured port

other .net core 2.x or 3.x, with the same physical path:  http://other.net/game/index.html => show nicely.

I know it's not about the Nop error, but still I don't know why Nop takes over the Application in this case.

Thanks for any input.

Enable logs from Web.Config file by change

stdoutLogEnabled="false"

to

stdoutLogEnabled="true"

and restart site in IIS.

Open site and check error log with fail: under logs folder.

I hope this will help you.

Thanks, I did that before, it shows all Info:, nothing is fail at all

stdout_2648_202041013141.log

I tried to turn off application pool, reopen and run domain.com/game/index.html instead of booting the Nop, still somehow Nop takes the run.

I think Application folder is a complete different app that should not be controlled by Nop