launchsettings.json

The launchsettings.json file resides in the "Properties" folder in the project root folder.

This file is only used on local development machine. We do not need it for publishing our asp.net core application.

If there are certain settings that you want your ASP.NET Core application to use when you publish and deploy your app, store them in appsettings.json file. We usually store our application configuration settings in this file, resides in the root directory.

The launchsettings.json actually set the running profiles of the application when running it from local machine.

{
  "profiles": {
    "http": {
      "commandName": "Project",
      "launchBrowser": true,
      "environmentVariables": {
        "ASPNETCORE_ENVIRONMENT": "Development"
      },
      "dotnetRunMessages": true,
      "applicationUrl": "http://localhost:5295"
    },
    "https": {
      "commandName": "Project",
      "launchBrowser": true,
      "environmentVariables": {
        "ASPNETCORE_ENVIRONMENT": "Development"
      },
      "dotnetRunMessages": true,
      "applicationUrl": "https://localhost:7154;http://localhost:5295"
    },
    "IIS Express": {
      "commandName": "IISExpress",
      "launchBrowser": true,
      "environmentVariables": {
        "ASPNETCORE_ENVIRONMENT": "Development"
      }
    }
  },
  "$schema": "https://json.schemastore.org/launchsettings.json",
  "iisSettings": {
    "windowsAuthentication": false,
    "anonymousAuthentication": true,
    "iisExpress": {
      "applicationUrl": "http://localhost:50708/",
      "sslPort": 44383
    }
  }
}