HTTP Error 500.24 - Internal Server Error : system.web/identity@impersonate is set to true

问题

I created an ASP.NET web application MVC Core 2.2 project. Then I ran it in IIS Express. But I received the following error:

HTTP Error 500.24 - Internal Server Error An ASP.NET setting has been detected that does not apply in Integrated managed pipeline mode.

Most likely causes: system.web/identity@impersonate is set to true.

Things you can try: If the application supports it, disable client impersonation. If you are certain that it is OK to ignore this error, it can be disabled by setting system.webServer/validation@validateIntegratedModeConfiguration to false.

This is my lunchSetting.json code:

{
  "iisSettings": {
    "windowsAuthentication": true,
    "anonymousAuthentication": true,
    "iisExpress": {
      "applicationUrl": "http://localhost:50764",
      "sslPort": 0
    }
  },
  "profiles": {
    "IIS Express": {
      "commandName": "IISExpress",
      "launchBrowser": true,
      "launchUrl": "http://localhost:50764",
      "environmentVariables": {
        "ASPNETCORE_ENVIRONMENT": "Development"
      }
    },
    "WebApplication2": {
      "commandName": "Project",
      "launchBrowser": true,
      "environmentVariables": {
        "ASPNETCORE_ENVIRONMENT": "Development"
      },
      "applicationUrl": "https://localhost:5001;http://localhost:5000"
    }
  }
}

回答1:

Something is wrong with your setup. "windowsAuthentication": true shouldn't be there. It's set to false by default, unless you are trying to set and use Windows Authentication. Setting up Windows Authentication requires special steps, including having a web.config file with forwardWindowsAuthToken="True" and .UseIISIntegration() in program.cs file. If you are not trying to do that, just set "windowsAuthentication": false.

回答2:

Clearly not the poster's problem, since he wrote he fixed it changing .NET Core version; but I'm posting what worked for me, just in case.

Open IIS and find your default website:

Then open the configuration editor:

The configuration editor opens; click the drop-down to the top left and pick system.web/identity:

Set impersonate to false:

And you're good to go!

来源：https://stackoverflow.com/questions/54727477/http-error-500-24-internal-server-error-system-web-identityimpersonate-is-s