How to Create GM Account and Configure Permissions on MU Server

Full control over your MU Online server starts with properly creating and configuring GM (Game Master) accounts. In this tutorial you will learn how to create a GM account via SQL Server, define permission levels, configure available commands per level, and secure administrative access.

What is a GM Account in MU Online

A GM account is a player account with elevated privileges within the server. The GM level is stored in the database and read by the GameServer at login. Depending on the assigned level, the character gains access to commands such as teleportation, item spawning, player banning, and real-time server monitoring.

Prerequisites

• Access to SQL Server Management Studio (SSMS) connected to the server database
• Access to the GameServer installation folder (e.g., C:/MuServer/GameServer/)
• Server stopped or ability to restart it after making changes
• A player account already created (via website or SQL)

Step 1 — Identify the Correct Database

Open SSMS and connect to the SQL server. The most common databases on MU servers are:

-- List all available databases
SELECT name FROM sys.databases WHERE name LIKE '%Mu%' OR name LIKE '%mu%';

Default database names are:

• MuOnline — account, character, and inventory data
• MuOnline_ME or MeOnline — used in some Season 6 distributions
• Account — on servers with a separate authentication database

Step 2 — Check the MEMB_INFO Table Structure

Before changing any values, verify the available fields:

USE MuOnline;
GO

-- View the accounts table structure
SELECT COLUMN_NAME, DATA_TYPE, CHARACTER_MAXIMUM_LENGTH
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_NAME = 'MEMB_INFO';

Essential fields for GM configuration:

Step 3 — Create the GM Account via SQL

If the account does not yet exist, create it directly in the database:

USE MuOnline;
GO

INSERT INTO MEMB_INFO (
    memb___id,
    memb__pwd,
    memb_name,
    sno__numb,
    bloc_code,
    mail_addr,
    mail_chek,
    bloc_memo,
    ctl1_code,
    m_Level,
    m_MLevelOK
)
VALUES (
    'gmadmin',          -- account login (max 10 characters)
    'senha123',         -- password (max 10 characters, no hash in S6)
    'GM Admin',         -- display name
    '000-000-000-00',   -- placeholder ID number (required in some versions)
    0,                  -- 0 = active account, 1 = blocked
    '[email protected]',
    1,                  -- e-mail verified
    '',
    0,
    3,                  -- m_Level = 3 (maximum GM)
    1
);

Step 4 — Promote an Existing Account to GM

If the account already exists and you want to elevate it:

USE MuOnline;
GO

-- Check account before making changes
SELECT memb___id, memb_name, m_Level, bloc_code
FROM MEMB_INFO
WHERE memb___id = 'accountname';

-- Set as GM Level 3 (administrator)
UPDATE MEMB_INFO
SET m_Level = 3
WHERE memb___id = 'accountname';

GM Level Reference Table

Step 5 — Configure Permissions in GameServerInfo.ini

Open the file GameServer/Data/GameServerInfo.ini (or GameServer/GameServerInfo.ini depending on the version) and locate the GM section:

[GameServer]
; Hide GM from the map for other players
HideGM = 1

; Minimum level for basic commands (/move, /post)
CommandMinLevel = 1

; Minimum level for moderation commands (/kick, /ban)
CommandModerateLevel = 2

; Minimum level for admin commands (/additem, /reset)
CommandAdminLevel = 3

; Can GMs spawn items?
GMAddItemEnable = 1

; Does GM appear in rankings?
GMRankingVisible = 0

Step 6 — Configure GM Commands per Level (Season 6)

On Season 6 servers with the file GameServer/Data/GmCommand.ini, configure as follows:

[GmCommand]
; Format: CommandName = MinimumGMLevel

/move = 1
/post = 1
/notice = 1
/warp = 1
/kick = 2
/mute = 2
/unmute = 2
/ban = 3
/unban = 3
/additem = 3
/setlevel = 3
/reset = 3
/addzen = 3
/dc = 3
/hide = 1
/unhide = 1

Step 7 — Create a GM Character (if Needed)

In some distributions, the GM character must be created separately from the account. Via SQL:

USE MuOnline;
GO

-- Check if a character already exists on the account
SELECT Name, Class, cLevel, Strength, Dexterity, Vitality, Energy
FROM Character
WHERE AccountID = 'gmadmin';

-- If not, insert a base character (example: Dark Knight)
INSERT INTO Character (
    AccountID, Name, Class, cLevel,
    Strength, Dexterity, Vitality, Energy, Leadership,
    MapNumber, MapPosX, MapPosY,
    Money, Experience, LevelUpPoint,
    CtlCode
)
VALUES (
    'gmadmin',
    'GMAdmin',   -- in-game visible name (max 10 chars)
    16,          -- 16 = Dark Knight (see class table below)
    400,         -- starting level
    400, 400, 400, 400, 0,
    0,           -- starting map (Lorencia = 0)
    125, 125,    -- X, Y coordinates in Lorencia
    999999999,   -- starting zen
    0,
    0,
    3            -- CtlCode = 3 for GM
);

Class Reference Table (Field Class)

Step 8 — Restart the GameServer and Test

After all changes are made:

1. Stop the GameServer (GameServer/GameServer.exe → close the process)
2. Restart the GameServer
3. Log in with the GM account you created
4. In-game, test the command /post MU Online Server Online!
5. If the command works, the GM account is correctly configured

Troubleshooting Common Issues

GM account cannot use commands

-- Check current account values
SELECT memb___id, m_Level, bloc_code, ctl1_code
FROM MuOnline.dbo.MEMB_INFO
WHERE memb___id = 'gmadmin';

If bloc_code = 1, the account is blocked. Fix it with:

UPDATE MuOnline.dbo.MEMB_INFO
SET bloc_code = 0
WHERE memb___id = 'gmadmin';

Character does not recognize GM level after login

Check that the character's CtlCode is correct:

SELECT Name, CtlCode FROM MuOnline.dbo.Character WHERE AccountID = 'gmadmin';

-- Fix CtlCode if needed
UPDATE MuOnline.dbo.Character
SET CtlCode = 3
WHERE AccountID = 'gmadmin';

GM commands work but players can see the GM on the map

Confirm that HideGM=1 is set in GameServerInfo.ini and that the server was restarted after the edit. Changes to .ini files only take effect after a full GameServer restart.

Security Best Practices

• Never use the same GM login for regular gameplay — keep accounts separate
• Change the GM password regularly via SQL: UPDATE MEMB_INFO SET memb__pwd = 'newPassword' WHERE memb___id = 'gmadmin';
• Review all GM actions in the GameServer logs (folder GameServer/Log/)
• Revoke permissions from former team members immediately: UPDATE MEMB_INFO SET m_Level = 0 WHERE memb___id = 'exgm';
• Consider creating accounts with m_Level = 1 for junior GMs — limit access to the minimum required

Perguntas frequentes