NET Remoting Error: Cannot create channel sink to connect to URL

Symptom:

You try to call an Activator.GetObject() to call a remote object.

Cannot create channel sink to connect to URL 'tcp:testhostname:1234/RemoteFileManager.soap'. An appropriate channel has probably not been registered. at System.Runtime.Remoting.RemotingServices.Unmarshal(Type classToProxy, String url, Object data) at System.Activator.GetObject(Type type, String url, Object state)

One Possible Cause:

Before going further and check the initializer and other stuff, double check the URL. In my case I forgot double slash after tcp:// and that caused above exception to happen.