nginx 1.1.0 not working on Windows 2000 Server

Sat Nov 26 11:29:47 UTC 2011

A customer of mine is running an ancient Windows 2000 Server 
installation, on which I have been running an old version of nginx. I 
want to upgrade to a more recent version, but nginx 1.1.0 is not working 
for me. I get the following in the error log:

2011/11/26 11:30:56 [notice] 25552#26824: 
WSAIoctl(SIO_GET_EXTENSION_FUNCTION_POINTER, WSAID_TRANSMITPACKETS) 
failed (10022: An invalid argument was supplied)
2011/11/26 11:30:56 [notice] 25552#26824: 
WSAIoctl(SIO_GET_EXTENSION_FUNCTION_POINTER, WSAID_CONNECTEX) failed 
(10022: An invalid argument was supplied)
2011/11/26 11:30:56 [notice] 25552#26824: 
WSAIoctl(SIO_GET_EXTENSION_FUNCTION_POINTER, WSAID_DISCONNECTEX) failed 
(10022: An invalid argument was supplied)

No idea what this signifies. Is this fixable, or does anyone know of a 
recent nginx version which does run OK on such an old OS?