Dynamics NAV 2015 - How to create a new Web Client Instance

• Ensure your Web Components have been installed for NAV
• Run the Microsoft Dynamics NAV 2015 Administration Shell as Administrator
• Not the Developer Shell, look for this specific shortcut
• Run 
• New-NAVWebServerInstance -WebServerInstance MyInstanceName -Server MyServerName -ServerInstance MyInstanceName
• Example
• New-NAVWebServerInstance -WebServerInstance TESTNAV -Server NAVSERVER -ServerInstance TESTNAV
• Full explanation here
• https://msdn.microsoft.com/en-us/library/jj551747(v=nav.80).aspx
• This will create a new Web Client Instance, however, it will copy the web.config from your primary web client instance 
• This results in the new Web Client instance still pointing to the old NAV server instance
• To fix this, modify the web.config on the new web client instance, or modify the C:\Program Files\Microsoft Dynamics NAV\80\Web Client\instanceweb.config file which will be used as the template for the new instance
• Navigate to C:\inetpub\wwwroot (you may need to give your account full access to this folder in order to change the web.config)
• Look for the Instance folder
• Go into it
• Edit the web.config file (or navsettings.json)
• Search for any references to the Primary NAV Instance, and the ClientServicesPort
• Replace port and instance with new port and instance
• Replace server with "localhost"
• Go to the C:\inetpub\wwwroot\TEST2015\WebClient
• Edit the instance web.config and replace all instances of the old instance name and port
• Restart everything

To Remove a web server instance

http://www.waldo.be/2015/02/03/remove-a-dynamics-nav-web-client-remove-navwebserverinstance/

• In IIS
• Expand Sites>Web Client>Instance
• Delete the WebClient at the lowest level for the instance first
• Remove the folder in IIS
• Delete the instance folder from C:\inetpub\wwwroot