Adding Kestrel launch option to Visual Studio 2015
In Solution Explorer > YourProject > Properties > launchSettings.json, You should add this to the in profiles:
"Kestrel": {
"commandName": "Project",
"launchBrowser": true,
"launchUrl": "http://localhost:5000",
"environmentVariables": {
"ASPNETCORE_ENVIRONMENT": "Development"
}
}