Article ID: 905628
When you run a custom Winsock network program on a Microsoft Windows XP Service Pack 2 (SP2)-based computer, you receive the following error message:
Note The error message that you receive may be different depending on the program that you are using.
Error 10055 = WSAENOBUFS
An operation on a socket could not be performed because the system lacked sufficient buffer space or because a queue was full.
This symptom occurs if the Windows XP SP2-based computer does not have network connectivity.
A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.
If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.
Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:
Date Time Version Size File name -------------------------------------------------------- 15-Aug-2005 23:58 5.1.2600.2739 360,576 Tcpip.sys 15-Aug-2005 23:46 5.1.2600.2739 30,720 Arpidfix.exe
To work around this problem, install the Microsoft Loopback Adapter.
To install the Microsoft Loopback Adapter, follow these steps:
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
This problem occurs in the custom Winsock network program when you try to join the computer to a multicast group. Specifically, this problem occurs if you try to join the computer to a multicast group by adding a multicast address on the network adaptor. The error message is generated when you call the Winsock setsockopt function with the IP_ADD_MEMBERSHIP option. The error message is generated even though you have disabled the Media Sense feature in Windows XP.
For more information about the standard terminology that is used to describe Microsoft software updates, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/824684/ )Description of the standard terminology that is used to describe Microsoft software updates