Well, it is already one step forward!
But why don't you want to find the meaning adn desription of this error? Don't you have MSDN? Or are you banned by Google?

BTW, this error means:
WSAEOPNOTSUPP (10045)

Operation not supported.

The attempted operation is not supported for the type of object referenced. Usually this occurs when a socket descriptor to a socket that cannot support this operation, for example, trying to accept a connection on a datagram socket.
For the listen function there is some additional info:
The referenced socket is not of a type that supports the listen operation.