If you have not registered the serial with steam then you are using WON, which is no longer supported. Register the serial with steam and the let steam downlaod half-life, once that is done play half-life, go into the training room, walk around for 5seconds and then exit. After that proceed with installing esf and then your'e done, you can play esf.tiggel said:Are you using Steam?
i have installed it but i dont inputted the serial
That error is difrent. That error says "client.dll differ s from server" not "cant load client.dll"dan_esf_fanatic said:If this error still appears once you get steam and everything works, then you're trying to join a server that has a different version of ESF then you.