Fix: This is a clear data mismatch. The server-side database indices do not line up with the client's localized .NDS tables. Re-export your server data files and overwrite the ones inside the client directory. Customizing Your Server Environment
Follow the prompts to restore each database and ensure the database owner ( dbo ) permissions are correctly mapped to your SQL user login. Step 2: Configuring Network and Database Connections
Comprehensive Guide to Atlantica Server Files: Setting Up Your Own Server
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Microsoft SQL Server (MSSQL) 2008 R2, 2012, or newer.
Open the main client executable (usually Atlantica.exe or a secondary launcher binary) inside a Hex Editor. Search for the default developer or publisher IP address or text string (e.g., server.atlantica... ) and replace it with your server's public IP address or 127.0.0.1 . Fill any remaining empty character spaces with null bytes ( 00 ).
[ Game Client ] │ ▼ [ Gateway Server (GWS) ] │ ┌───────┴───────┐ ▼ ▼ [ Game Server ] ◄───► [ Database Server (MSSQL) ] The Executables Fix: This is a clear data mismatch
Handles user authentication, account verification, and hands off the player connection to the lobby.
The core engine that processes map data, combat calculations, AI behavior, player movements, and inventory management.
Last updated: 2026
Stores character data, inventory, and account information.
: Installing prerequisites like .NET Framework (3.5 and 4.5), DirectX, and a 64-bit version of MSSQL Express .
Data files (NDO, NDT) that define item stats, monster levels, and quest logic. Key Requirements for Hosting Customizing Your Server Environment Follow the prompts to
A frequent point of failure for private servers is a mismatch between what the server thinks an item does and what the game client displays. Atlantica relies on compiled data tables often packed as .NDS files or server-side structural tables.
If you find a "Repack" (a pre-configured set of files), it typically includes: Database (DB): Files to be attached to your SQL server. Server Executables: LoginServer GameServer applications. Config Files ( Where you set your server IP and connection strings. The Client: