e so ir em C:\MuServer\GameServer\DATAGameServerInfo - Common e edita o serial la ta assim
[GameServerInfo]
;================================================= =
; Customer Settings
;================================================= =
CustomerName = MuEMU
CustomerHardwareId = 303547B5-A02E20D5-F45BCFF6-8F4BD8E7
cola esse
C6E79854-79DEA13D-F45B00B5-9F45D8E6
no lugar desse
303547B5-A02E20D5-F45BCFF6-8F4BD8E7