Hi @BAN - L2JDev , really appreciate this project, helped me so much to learn and explore new ways to l2 java, I kind of struggled with HWID to adapt it to my server, I added the script and everything seems to be working when I use your system patch, however when I installed my patch with Classic interface I can't seem to join in game server, it logs in shows server is on but doesn't go further. My guess system can't find HWID code and that's why it doesn't allow people to procced. could you let me know which file in system actually send hwid packet to the server? as I tried .dll and .u files