Ggtcf

I have an old WCF webservice that's been moved to Azure VM.

I can easily access in Azure:
https://wcf/service.svc,
but when I try to post to:
https://wcf/service.svc/json/DoAction
it comes back with an empty response, when I open this in the browser I get 404 error.

Outside of Azure it all works fine, any ideas what can I do to get it to work? I would like to keep it running in VM as there are other items that were moved and work fine.

Here is the part of the web.config file that relates to "/json/" part:

<system.serviceModel>
 <serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
 <services>
 <service name="Service123" behaviorConfiguration="ChallengeBehavior">
 <endpoint address="" binding="wsHttpBinding" bindingConfiguration="ChallengeMessageEncoding" contract="IService123" behaviorConfiguration="SoapServiceBehavior" />
 <endpoint address="/json" binding="webHttpBinding" bindingConfiguration="RestServiceMessageEncoding" contract="IService123" behaviorConfiguration="RestServiceBehavior" />
 </service>
 </services>
 <behaviors>
 <endpointBehaviors>
 <behavior name="RestServiceBehavior">
 <webHttp defaultOutgoingResponseFormat="Json" automaticFormatSelectionEnabled="true" />
 </behavior>
 <behavior name="SoapServiceBehavior">
 </behavior>
 </endpointBehaviors>
 </behaviors>
 <bindings>
 <webHttpBinding>
 <binding name="RestServiceMessageEncoding">
 <security mode="None">
 </security>
 </binding>
 </webHttpBinding>
 <wsHttpBinding>
 <binding name="ChallengeMessageEncoding">
 <security mode="None">
 <transport clientCredentialType="None" proxyCredentialType="None" />
 <message clientCredentialType="None" establishSecurityContext="false" negotiateServiceCredential="false" />
 </security>
 </binding>
 </wsHttpBinding>
 </bindings>
</system.serviceModel>