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://localhost:12345/ is what is in your launchSettings.json for HTTPS


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