In GTA 5 banned authors multiplayer mode

Rockstar banned creators multiplayer mod for GTA 5 FiveM for possible aiding piracy. Modification FiveM worked on its own server system, which, according to developers, is more stable than that used in the GTA Online. In Rockstar explained the decision to the bath so that the company can not control the network code fashion and prevent attempts of piracy therein.
It is worth noting that earlier representatives Rockstar have stated that they will only support a single mode fashion as modifications for GTA Online can be used for cheating in multiplayer. Thus, developers FiveM knowingly violated the rules published by the company.