The default URL is not working correctly when deploying the ASP.NET Core 8 MVC application on IIS in Windows Server

Question

Issue: default URL is not working properly when deploying ASP.NET Core 8 MVC on IIS (Windows Server).

In my ASP.NET Core 8 MVC application, I specified the launchUrl in the launchSettings.json file. It works correctly in local development - when I start the application, it automatically opens the specified launch URL (e.g., http://localhost:20395/Auth/Login).

However, after deploying the application to IIS on a Windows Server, the application opens with http://localhost/MyAppName instead of the expected http://localhost/MyAppName/Auth/Login.

What could be the reason for this behavior, and how can I configure IIS to use the correct launch URL?

My launchSettings.json:

{
  "profiles": {
    "http": {
      "commandName": "Project",
      "launchBrowser": true,
      "environmentVariables": {
        "ASPNETCORE_ENVIRONMENT": "Development"
      },
      "launchUrl": "Auth/Login",
      "dotnetRunMessages": true,
      "applicationUrl": "http://localhost:5298"
    },
    "IIS Express": {
      "commandName": "IISExpress",
      "launchBrowser": true,
      "launchUrl": "Auth/Login",
      "environmentVariables": {
        "ASPNETCORE_ENVIRONMENT": "Development",
        "ASPNETCORE_HOTRELOAD_MAXRULES": "15000"
      }
    },
    "WSL": {
      "commandName": "WSL2",
      "launchBrowser": true,
      "launchUrl": "http://localhost:5298",
      "environmentVariables": {
        "ASPNETCORE_ENVIRONMENT": "Development",
        "ASPNETCORE_URLS": "http://localhost:5298"
      },
      "distributionName": ""
    }
  },
  "$schema": "http://json.schemastore.org/launchsettings.json",
  "iisSettings": {
    "windowsAuthentication": false,
    "anonymousAuthentication": true,
    "iisExpress": {
      "applicationUrl": "http://localhost:20395",
      "sslPort": 0
    }
  }
}

Brando Zhang · Accepted Answer · 2025-02-28 08:31:41Z

1

This is because the lunchsetting.json is not work when deploying to the IIS.

If you want to set the default url inside the asp.net core application, I suggest you could modify the default route for your MVC application like below in program.cs:

app.MapControllerRoute(
    name: "default",
    pattern: "{controller=Auth}/{action=Login}");

edited Feb 28 at 8:31

answered Feb 28 at 5:32

Brando Zhang

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