Add the solution to a common ports issue and a reference to issue #299

02.-Setting-eShopOnContainers-in-a-Visual-Studio-2017-environment.md

@@ -70,8 +70,11 @@ The drive you'll need to share depends on where you place your source code.
 
 - You can manually create a rule in your local firewall in your development machine or you can also create that rule by just executing the <b>add-firewall-rules-for-sts-auth-thru-docker.ps1</b> script available in the solution's **cli-windows** folder. 
 - Basically, you need to open the ports 5100 to 5110 that are used by the solution by creating an IN-BOUND RULE in your firewall, as shown in the screenshot below (for Windows).
+
 <img src="img/firewall-rule-for-eshop.png"> 
 
+- **NOTE:** If you get the error **Unable to obtain configuration from: `http://10.0.75.1:5105/.well-known/openid-configuration`** you might need to allow to the program `vpnkit` for connections to and from any computer through all ports (see [issue #295](https://github.com/dotnet-architecture/eShopOnContainers/issues/295#issuecomment-327973650).
+
 ### Installing and configuring Visual Studio 2017 in your development machine
 
 #### Install Visual Studio 2017