If your antivirus 'swears' at the MuOnline client files and considers some of them as a virus or suspicious and deletes them, then add reported client files to the antivirus exceptions. Game files are not dangerous and do not pose a threat to your computer.
Please check your system requirements to ensure your system is suitable for your selected game.
Pentium 4 – 2.0 Ghz or higher
1 GB or higher
3D graphics processor
DirectX 9.0c or higher
Hard Disk Space
2GB or higher
Here you can find all the necessary files for playing on our MU Online server.
Additional software components may be required to run the game on your computer.