1、在 launchSettings.json 文件中修改成为 IIS Express 版本

{
  "iisSettings": {
    "windowsAuthentication": false,
    "anonymousAuthentication": true,
    "iisExpress": {
      "applicationUrl": "http://localhost:32123",
      "sslPort": 12321
    }
  },
  "profiles": {
    "IIS Express": {
      "commandName": "IISExpress",
      "launchBrowser": true,
      "launchUrl": "",
      "environmentVariables": {
        "ASPNETCORE_ENVIRONMENT": "Development"
      }
    }
  },
  "$schema": "https://json.schemastore.org/launchsettings.json"
}

2、如果不需要 https，可以将 sslPort 改为 0 即可。

3、如果需要 https，还需要执行以下脚本，为 sslPort 配置证书

& "C:\Program Files (x86)\IIS Express\IisExpressAdminCmd.exe" setupsslUrl -url:https://localhost:12321/ -UseSelfSigned

4、检查证书结果

netsh http show sslcert ipport=0.0.0.0:12321

5、应该就可以正常使用了。