HTTP 503 errror on W2k3 Machine

[stephendevine3029]

Hi

I am getting http 503 error on Win 2003 server machine when calling a
web service.

If i call the same web service form an XP machine using the same
application it works as expected.

System.Net.WebException: The request failed with HTTP status 503:
Service Unavailable.
at
System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage
message, WebResponse response, Stream responseStream, Boolean
asyncCall)
at
System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String
methodName, Object[] parameters)

Anyone got any ideas why the calls differ on 2003.

I am logged onto the machines using the same user, the same happens
when called form a windows and a web application.