Crysis server authentication error Multi-Player?

[kmufc77]

hi i cant seem to be able to play multiplayer on Crysis keep getting the server authentication error has anybody else had this problem?

 

[C64]

Type regedit in RUN and go to hkey local machine/software/electronic arts/electronic arts/crysis/ergc and look to see if your cd key is there.
If not enter it there without the -
if it is then i have no idea but i know beta keys and keygen keys have been blocked not that i am saying yours isn't legit.