Enable MEX in a Web.Config

Question

How do I enable/create a MEX endpoint in the below web config so I can view the service from my browser?

I have tried a few variation from googling but VS always complai

Answer 1

Add this line to the web.config right under the service endpoint:

Thanks josh3736 for the tip on the GUI editor, the only problem I had was I still didn't know how to use the editor to do this, so here is what I did:

1. In VS, open Tools/WCF Service Configuration Editor
2. Open the web.config or app.config file that contains your service definition
3. Navigate to the Services / (your service) / Endpoints folder
4. If the MetadataEndpoint is there, click on it and edit the configuration to your liking, otherwise, right-click the Endpoint folder then click New Service Endpoint and configure like the one in the image below.