Common Net Core Issues when debugging a web app using IIS Express
Remote Access to Local ASP.NET Core Applications from Mobile Devices - Kloud Blog https://marketplace.visualstudio.com/items?itemName=vs-publisher-1448185.ConveyorbyKeyoti Error: unable to connect to web server 'IIS Express' Solution: restart Visual Studio as Administrator Error: Bad host name when starting using http://localhost:xxx Solution: Delete .vs folder (requires to close Visual Studio 2017) The ssl port is used. Please check launchSettings.json, set "sslPort" to 0. Error: This site can’t be reached when starting a SSL site Solution: To fix self-signed certificate on the local machine you need to: Delete .vs folder (requires to close Visual Studio 2017) Run these commands in cmd As Administrator: cd "C:\Program Files (x86)\IIS Express" IisExpressAdminCmd.exe setupsslUrl -url:https://localhost:12345/ -UseSelfSigned Make sure you run VS2017 As Administrator and check if the issue addressed Note: https://lo