Article ID: 815209 - View products that this article applies to.
In Microsoft Visual Studio .NET 2003, when you try to add a Web reference to a Web service, or when you call a Web service method, you may receive the following error message:
There was an error downloading 'http://WebServerName/WebServicePath/WebServiceName'. The operation has timed-out.
Note WebServerName is a placeholder for the name of your Web server, WebServicePath is a placeholder for the path of the Web service, and WebServiceName is the name of the Web service.
In addition, when you use the IPAddress class, you may receive a "System.TypeInitializationException" exception. For example, when you use the Web Service Description Language tool (Wsdl.exe) to try to create a Web service proxy file, you may receive the following error message:
Unhandled Exception: System.TypeInitializationException: The type initializer for "System.Net.Sockets.Socket" threw an exception. ---> System.Net.Sockets.SocketException: An operation on a socket could not be performed because the system lacked sufficient buffer space or because a queue was full at System.Net.Sockets.Socket.InitializeSockets() at System.Net.Sockets.Socket..cctor()
Note You do not receive the previous error messages when you use Microsoft .NET Framework v1.0.
When you install a protocol or a network adapter on your computer, the operating system creates a protocol binding between the network adapters and the protocols that are installed on your computer. Typically, a computer can store up to 50 protocol binding details. Therefore, if the number of protocol bindings exceeds 50, and you use the IPAddress class directly or indirectly (such as when you try to add a Web reference or when you call a Web service method), you receive the error messages that are mentioned in the "Symptoms" section of this article.
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To resolve this problem, you must reduce the number of protocol bindings on your computer to less than 50. To do this, use one of the following methods:
Microsoft has confirmed that this is a bug in the Microsoft products that are listed at the beginning of this article.
Steps to Reproduce the Problem
For more information, visit the following Microsoft Developer Network (MSDN) Web sites: