Current Stage: 1/7
Requirements:
No Requirements
No Requirements
Invasions & Bosses:
Lunar Rabbit, White Wizard, Skeleton King,
Lunar Rabbit, White Wizard, Skeleton King,
Starter Buffs:
NO
NO
EXP Boost for new players:
NO
NO
Download
FORT MU — Game Client
DOWNLOAD
Full Client V3.0 — 936 MB
with Launcher and PS GUARD Anticheat
Full Client V3.0 — 936 MB
with Launcher and PS GUARD Anticheat
⬇ DOWNLOAD NOW
Direct .zip • fast mirror
Notice: Open the game only with
Launcher.exe.
How to Install
- Download the archive (.zip) and extract it to a folder (e.g. C:\Games\FORTMU).
- Run Launcher.exe (it will update files if needed).
- Click Start Game in the launcher.
Additional Information
- If the game didn’t start on the first try — simply try again.
- Check if your firewall or antivirus is blocking
main.exe,launcher.exeor anticheat files — add them to exceptions if you have connection issues. - Always start the game via Launcher.exe.
Troubleshooting
- Run Launcher.exe as Administrator.
- Update your GPU drivers and Microsoft Visual C++ Runtimes.
- Disable overlays (Discord/GeForce/Afterburner) if you experience crashes.
- If issues persist, create a Support Ticket after logging in.
Windows 11 Main Problem Fix
If you get messages like “Missing file: main” or the game window closes on Windows 11,
follow this step-by-step guide:
Main Has Stopped Working – MuOnline Windows 11 Problem Solved
.
By downloading the client you agree to our rules and anticheat policy. Most connection problems are caused by local firewall/AV settings or launching the game without the official Launcher.
GRAND OPENING
