I'm trying to add web services with Visual Studio, I always got the following error:
The request failed with HTTP status 404: Not Found. Metadata contains a reference that can not be resolved:
http://server:port/_vti_bin/Lists.asmx?WSDL. The HTTP request is not allowed with customer authentication scheme 'Anonymous'.
When I try to browse the web services
http://server:port/_vti_bin/Lists.asmx?WSDL xml file, I see a blank page. Any idea?