NOTE: The 64-bit client uses a separate file to keep client settings between the 32 and 64 bit versions separated.32bit operating systems may encounter memory limitations when the game client is running and stability issues may result Although LOTRO is a 32bit application we strongly encourage players to use a 64 bit OS like Windows Vista or Windows 7 (Please note that Windows 8 and 8.1 are not officially supported).Home LOTRO 64 bit client Mac Mac Client - Lotro-Wiki
