Hello. I get the same "Cheat or RAM error or virtual machine detected" error whenever I login.
I just did everything - clean windows10, clean L2H5 client from RPG-club website, check files, deleted system folder, again check files, then I did a full check. Nothing helps. Hyper-V is deactivated. I already submitted a ticker, still no solution... Ticket number: 77842.
Wait for reply on ticket. Meanwhile try switching off anti-virus
Firewall and anti-virus is turned off, still the same error...