I am calling a 'old school' asp.net webservice (no wcf), hosted in IIS, secured with Windows Authentication and anonymous not allowed.
When I call this from a test app from an other server (winforms, vs2008SP1, .net 3.5), having a generated client app.config with WCF bindings, logged on with a user that is granted on AD and on the hosting webservice server, I get an error:
" Server was unable to process request. ---> Object reference not set to an instance of an object."
I have security mode = TransportCredentialOnly" and transport clientCredentialType='Windows'....