[HELP] Connection rejected: Failed to send unique id

[axelnieves2012]

When I try to play online, i get this error message. Can anyone help me please??

I appear invisible at Kaufman Cabs, and I get this message on top-left corner, in blue color. (i cant upload screenshot)
"Connection rejected: Failed to send unique id."

[EK.IceFlake]

Make sure you have Windows XP Service Pack 3 or a later version of Windows.