大家好！我在调用WSCInstallProvider进行SPI安装时，在部分XP SP2的机器上返回SOCKET_ERROR，错误码为11091，MSDN上的解释为：
WSASYSNOTREADY
10091
- Network subsystem is unavailable.
- This error is returned by WSAStartup if the Windows Sockets implementation cannot function at this time because the underlying system it uses to provide network services is currently unavailable. Users should check:
- That the appropriate Windows Sockets DLL file is in the current path.
- That they are not trying to use more than one Windows Sockets implementation simultaneously. If there is more than one Winsock DLL on your system, be sure the first one in the path is appropriate for the network subsystem currently loaded.
- The Windows Sockets implementation documentation to be sure all necessary components are currently installed and configured correctly.
有哪位遇到过这种问题吗，或者知道为什么会产生这个错误，我认为我的环境不在以上三条描述之列，谢谢。
